def to_csv( # pylint: disable=too-many-arguments,too-many-locals,too-many-statements,too-many-branches
df: pd.DataFrame,
path: Optional[str] = None,
sep: str = ",",
index: bool = True,
columns: Optional[List[str]] = None,
use_threads: Union[bool, int] = True,
boto3_session: Optional[boto3.Session] = None,
s3_additional_kwargs: Optional[Dict[str, Any]] = None,
sanitize_columns: bool = False,
dataset: bool = False,
filename_prefix: Optional[str] = None,
partition_cols: Optional[List[str]] = None,
bucketing_info: Optional[Tuple[List[str], int]] = None,
concurrent_partitioning: bool = False,
mode: Optional[str] = None,
catalog_versioning: bool = False,
schema_evolution: bool = False,
database: Optional[str] = None,
table: Optional[str] = None,
table_type: Optional[str] = None,
transaction_id: Optional[str] = None,
dtype: Optional[Dict[str, str]] = None,
description: Optional[str] = None,
parameters: Optional[Dict[str, str]] = None,
columns_comments: Optional[Dict[str, str]] = None,
regular_partitions: bool = True,
projection_enabled: bool = False,
projection_types: Optional[Dict[str, str]] = None,
projection_ranges: Optional[Dict[str, str]] = None,
projection_values: Optional[Dict[str, str]] = None,
projection_intervals: Optional[Dict[str, str]] = None,
projection_digits: Optional[Dict[str, str]] = None,
catalog_id: Optional[str] = None,
**pandas_kwargs: Any,
) -> Dict[str, Union[List[str], Dict[str, List[str]]]]:
"""Write CSV file or dataset on Amazon S3.
The concept of Dataset goes beyond the simple idea of ordinary files and enable more
complex features like partitioning and catalog integration (Amazon Athena/AWS Glue Catalog).
Note
----
If database` and `table` arguments are passed, the table name and all column names
will be automatically sanitized using `wr.catalog.sanitize_table_name` and `wr.catalog.sanitize_column_name`.
Please, pass `sanitize_columns=True` to enforce this behaviour always.
Note
----
If `table` and `database` arguments are passed, `pandas_kwargs` will be ignored due
restrictive quoting, date_format, escapechar and encoding required by Athena/Glue Catalog.
Note
----
Compression: The minimum acceptable version to achive it is Pandas 1.2.0 that requires Python >= 3.7.1.
Note
----
On `append` mode, the `parameters` will be upsert on an existing table.
Note
----
In case of `use_threads=True` the number of threads
that will be spawned will be gotten from os.cpu_count().
Parameters
----------
df: pandas.DataFrame
Pandas DataFrame https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.html
path : str, optional
Amazon S3 path (e.g. s3://bucket/prefix/filename.csv) (for dataset e.g. ``s3://bucket/prefix``).
Required if dataset=False or when creating a new dataset
sep : str
String of length 1. Field delimiter for the output file.
index : bool
Write row names (index).
columns : Optional[List[str]]
Columns to write.
use_threads : bool, int
True to enable concurrent requests, False to disable multiple threads.
If enabled os.cpu_count() will be used as the max number of threads.
If integer is provided, specified number is used.
boto3_session : boto3.Session(), optional
Boto3 Session. The default boto3 Session will be used if boto3_session receive None.
s3_additional_kwargs : Optional[Dict[str, Any]]
Forwarded to botocore requests.
e.g. s3_additional_kwargs={'ServerSideEncryption': 'aws:kms', 'SSEKMSKeyId': 'YOUR_KMS_KEY_ARN'}
sanitize_columns : bool
True to sanitize columns names or False to keep it as is.
True value is forced if `dataset=True`.
dataset : bool
If True store as a dataset instead of ordinary file(s)
If True, enable all follow arguments:
partition_cols, mode, database, table, description, parameters, columns_comments, concurrent_partitioning,
catalog_versioning, projection_enabled, projection_types, projection_ranges, projection_values,
projection_intervals, projection_digits, catalog_id, schema_evolution.
filename_prefix: str, optional
If dataset=True, add a filename prefix to the output files.
partition_cols: List[str], optional
List of column names that will be used to create partitions. Only takes effect if dataset=True.
bucketing_info: Tuple[List[str], int], optional
Tuple consisting of the column names used for bucketing as the first element and the number of buckets as the
second element.
Only `str`, `int` and `bool` are supported as column data types for bucketing.
concurrent_partitioning: bool
If True will increase the parallelism level during the partitions writing. It will decrease the
writing time and increase the memory usage.
https://aws-data-wrangler.readthedocs.io/en/2.13.0/tutorials/022%20-%20Writing%20Partitions%20Concurrently.html
mode : str, optional
``append`` (Default), ``overwrite``, ``overwrite_partitions``. Only takes effect if dataset=True.
For details check the related tutorial:
https://aws-data-wrangler.readthedocs.io/en/2.13.0/stubs/awswrangler.s3.to_parquet.html#awswrangler.s3.to_parquet
catalog_versioning : bool
If True and `mode="overwrite"`, creates an archived version of the table catalog before updating it.
schema_evolution : bool
If True allows schema evolution (new or missing columns), otherwise a exception will be raised.
(Only considered if dataset=True and mode in ("append", "overwrite_partitions")). False by default.
Related tutorial:
https://aws-data-wrangler.readthedocs.io/en/2.13.0/tutorials/014%20-%20Schema%20Evolution.html
database : str, optional
Glue/Athena catalog: Database name.
table : str, optional
Glue/Athena catalog: Table name.
table_type: str, optional
The type of the Glue Table. Set to EXTERNAL_TABLE if None
transaction_id: str, optional
The ID of the transaction when writing to a Governed Table.
dtype : Dict[str, str], optional
Dictionary of columns names and Athena/Glue types to be casted.
Useful when you have columns with undetermined or mixed data types.
(e.g. {'col name': 'bigint', 'col2 name': 'int'})
description : str, optional
Glue/Athena catalog: Table description
parameters : Dict[str, str], optional
Glue/Athena catalog: Key/value pairs to tag the table.
columns_comments : Dict[str, str], optional
Glue/Athena catalog:
Columns names and the related comments (e.g. {'col0': 'Column 0.', 'col1': 'Column 1.', 'col2': 'Partition.'}).
regular_partitions : bool
Create regular partitions (Non projected partitions) on Glue Catalog.
Disable when you will work only with Partition Projection.
Keep enabled even when working with projections is useful to keep
Redshift Spectrum working with the regular partitions.
projection_enabled : bool
Enable Partition Projection on Athena (https://docs.aws.amazon.com/athena/latest/ug/partition-projection.html)
projection_types : Optional[Dict[str, str]]
Dictionary of partitions names and Athena projections types.
Valid types: "enum", "integer", "date", "injected"
https://docs.aws.amazon.com/athena/latest/ug/partition-projection-supported-types.html
(e.g. {'col_name': 'enum', 'col2_name': 'integer'})
projection_ranges: Optional[Dict[str, str]]
Dictionary of partitions names and Athena projections ranges.
https://docs.aws.amazon.com/athena/latest/ug/partition-projection-supported-types.html
(e.g. {'col_name': '0,10', 'col2_name': '-1,8675309'})
projection_values: Optional[Dict[str, str]]
Dictionary of partitions names and Athena projections values.
https://docs.aws.amazon.com/athena/latest/ug/partition-projection-supported-types.html
(e.g. {'col_name': 'A,B,Unknown', 'col2_name': 'foo,boo,bar'})
projection_intervals: Optional[Dict[str, str]]
Dictionary of partitions names and Athena projections intervals.
https://docs.aws.amazon.com/athena/latest/ug/partition-projection-supported-types.html
(e.g. {'col_name': '1', 'col2_name': '5'})
projection_digits: Optional[Dict[str, str]]
Dictionary of partitions names and Athena projections digits.
https://docs.aws.amazon.com/athena/latest/ug/partition-projection-supported-types.html
(e.g. {'col_name': '1', 'col2_name': '2'})
catalog_id : str, optional
The ID of the Data Catalog from which to retrieve Databases.
If none is provided, the AWS account ID is used by default.
pandas_kwargs :
KEYWORD arguments forwarded to pandas.DataFrame.to_csv(). You can NOT pass `pandas_kwargs` explicit, just add
valid Pandas arguments in the function call and Wrangler will accept it.
e.g. wr.s3.to_csv(df, path, sep='|', na_rep='NULL', decimal=',')
https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.to_csv.html
Returns
-------
Dict[str, Union[List[str], Dict[str, List[str]]]]
Dictionary with:
'paths': List of all stored files paths on S3.
'partitions_values': Dictionary of partitions added with keys as S3 path locations
and values as a list of partitions values as str.
Examples
--------
Writing single file
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_csv(
... df=pd.DataFrame({'col': [1, 2, 3]}),
... path='s3://bucket/prefix/my_file.csv',
... )
{
'paths': ['s3://bucket/prefix/my_file.csv'],
'partitions_values': {}
}
Writing single file with pandas_kwargs
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_csv(
... df=pd.DataFrame({'col': [1, 2, 3]}),
... path='s3://bucket/prefix/my_file.csv',
... sep='|',
... na_rep='NULL',
... decimal=','
... )
{
'paths': ['s3://bucket/prefix/my_file.csv'],
'partitions_values': {}
}
Writing single file encrypted with a KMS key
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_csv(
... df=pd.DataFrame({'col': [1, 2, 3]}),
... path='s3://bucket/prefix/my_file.csv',
... s3_additional_kwargs={
... 'ServerSideEncryption': 'aws:kms',
... 'SSEKMSKeyId': 'YOUR_KMS_KEY_ARN'
... }
... )
{
'paths': ['s3://bucket/prefix/my_file.csv'],
'partitions_values': {}
}
Writing partitioned dataset
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_csv(
... df=pd.DataFrame({
... 'col': [1, 2, 3],
... 'col2': ['A', 'A', 'B']
... }),
... path='s3://bucket/prefix',
... dataset=True,
... partition_cols=['col2']
... )
{
'paths': ['s3://.../col2=A/x.csv', 's3://.../col2=B/y.csv'],
'partitions_values: {
's3://.../col2=A/': ['A'],
's3://.../col2=B/': ['B']
}
}
Writing bucketed dataset
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_csv(
... df=pd.DataFrame({
... 'col': [1, 2, 3],
... 'col2': ['A', 'A', 'B']
... }),
... path='s3://bucket/prefix',
... dataset=True,
... bucketing_info=(["col2"], 2)
... )
{
'paths': ['s3://.../x_bucket-00000.csv', 's3://.../col2=B/x_bucket-00001.csv'],
'partitions_values: {}
}
Writing dataset to S3 with metadata on Athena/Glue Catalog.
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_csv(
... df=pd.DataFrame({
... 'col': [1, 2, 3],
... 'col2': ['A', 'A', 'B']
... }),
... path='s3://bucket/prefix',
... dataset=True,
... partition_cols=['col2'],
... database='default', # Athena/Glue database
... table='my_table' # Athena/Glue table
... )
{
'paths': ['s3://.../col2=A/x.csv', 's3://.../col2=B/y.csv'],
'partitions_values: {
's3://.../col2=A/': ['A'],
's3://.../col2=B/': ['B']
}
}
Writing dataset to Glue governed table
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_csv(
... df=pd.DataFrame({
... 'col': [1, 2, 3],
... 'col2': ['A', 'A', 'B'],
... 'col3': [None, None, None]
... }),
... dataset=True,
... mode='append',
... database='default', # Athena/Glue database
... table='my_table', # Athena/Glue table
... table_type='GOVERNED',
... transaction_id="xxx",
... )
{
'paths': ['s3://.../x.csv'],
'partitions_values: {}
}
Writing dataset casting empty column data type
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_csv(
... df=pd.DataFrame({
... 'col': [1, 2, 3],
... 'col2': ['A', 'A', 'B'],
... 'col3': [None, None, None]
... }),
... path='s3://bucket/prefix',
... dataset=True,
... database='default', # Athena/Glue database
... table='my_table' # Athena/Glue table
... dtype={'col3': 'date'}
... )
{
'paths': ['s3://.../x.csv'],
'partitions_values: {}
}
"""
if "pandas_kwargs" in pandas_kwargs:
raise exceptions.InvalidArgument(
"You can NOT pass `pandas_kwargs` explicit, just add valid "
"Pandas arguments in the function call and Wrangler will accept it."
"e.g. wr.s3.to_csv(df, path, sep='|', na_rep='NULL', decimal=',', compression='gzip')"
)
if pandas_kwargs.get("compression") and str(
pd.__version__) < LooseVersion("1.2.0"):
raise exceptions.InvalidArgument(
f"CSV compression on S3 is not supported for Pandas version {pd.__version__}. "
"The minimum acceptable version to achive it is Pandas 1.2.0 that requires Python >=3.7.1."
)
_validate_args(
df=df,
table=table,
database=database,
dataset=dataset,
path=path,
partition_cols=partition_cols,
bucketing_info=bucketing_info,
mode=mode,
description=description,
parameters=parameters,
columns_comments=columns_comments,
)
# Initializing defaults
partition_cols = partition_cols if partition_cols else []
dtype = dtype if dtype else {}
partitions_values: Dict[str, List[str]] = {}
mode = "append" if mode is None else mode
commit_trans: bool = False
if transaction_id:
table_type = "GOVERNED"
filename_prefix = filename_prefix + uuid.uuid4(
).hex if filename_prefix else uuid.uuid4().hex
session: boto3.Session = _utils.ensure_session(session=boto3_session)
# Sanitize table to respect Athena's standards
if (sanitize_columns is True) or (database is not None
and table is not None):
df, dtype, partition_cols = _sanitize(df=df,
dtype=dtype,
partition_cols=partition_cols)
# Evaluating dtype
catalog_table_input: Optional[Dict[str, Any]] = None
if database and table:
catalog_table_input = catalog._get_table_input( # pylint: disable=protected-access
database=database,
table=table,
boto3_session=session,
transaction_id=transaction_id,
catalog_id=catalog_id)
catalog_path: Optional[str] = None
if catalog_table_input:
table_type = catalog_table_input["TableType"]
catalog_path = catalog_table_input.get("StorageDescriptor",
{}).get("Location")
if path is None:
if catalog_path:
path = catalog_path
else:
raise exceptions.InvalidArgumentValue(
"Glue table does not exist in the catalog. Please pass the `path` argument to create it."
)
elif path and catalog_path:
if path.rstrip("/") != catalog_path.rstrip("/"):
raise exceptions.InvalidArgumentValue(
f"The specified path: {path}, does not match the existing Glue catalog table path: {catalog_path}"
)
if pandas_kwargs.get("compression") not in ("gzip", "bz2", None):
raise exceptions.InvalidArgumentCombination(
"If database and table are given, you must use one of these compressions: gzip, bz2 or None."
)
if (table_type == "GOVERNED") and (not transaction_id):
_logger.debug(
"`transaction_id` not specified for GOVERNED table, starting transaction"
)
transaction_id = lakeformation.start_transaction(
read_only=False, boto3_session=boto3_session)
commit_trans = True
df = _apply_dtype(df=df,
dtype=dtype,
catalog_table_input=catalog_table_input,
mode=mode)
paths: List[str] = []
if dataset is False:
pandas_kwargs["sep"] = sep
pandas_kwargs["index"] = index
pandas_kwargs["columns"] = columns
_to_text(
file_format="csv",
df=df,
use_threads=use_threads,
path=path,
boto3_session=session,
s3_additional_kwargs=s3_additional_kwargs,
**pandas_kwargs,
)
paths = [path] # type: ignore
else:
compression: Optional[str] = pandas_kwargs.get("compression", None)
if database and table:
quoting: Optional[int] = csv.QUOTE_NONE
escapechar: Optional[str] = "\\"
header: Union[bool, List[str]] = pandas_kwargs.get("header", False)
date_format: Optional[str] = "%Y-%m-%d %H:%M:%S.%f"
pd_kwargs: Dict[str, Any] = {}
else:
quoting = pandas_kwargs.get("quoting", None)
escapechar = pandas_kwargs.get("escapechar", None)
header = pandas_kwargs.get("header", True)
date_format = pandas_kwargs.get("date_format", None)
pd_kwargs = pandas_kwargs.copy()
pd_kwargs.pop("quoting", None)
pd_kwargs.pop("escapechar", None)
pd_kwargs.pop("header", None)
pd_kwargs.pop("date_format", None)
pd_kwargs.pop("compression", None)
df = df[columns] if columns else df
columns_types: Dict[str, str] = {}
partitions_types: Dict[str, str] = {}
if database and table:
columns_types, partitions_types = _data_types.athena_types_from_pandas_partitioned(
df=df,
index=index,
partition_cols=partition_cols,
dtype=dtype,
index_left=True)
if schema_evolution is False:
_utils.check_schema_changes(columns_types=columns_types,
table_input=catalog_table_input,
mode=mode)
if (catalog_table_input is None) and (table_type == "GOVERNED"):
catalog._create_csv_table( # pylint: disable=protected-access
database=database,
table=table,
path=path,
columns_types=columns_types,
table_type=table_type,
partitions_types=partitions_types,
bucketing_info=bucketing_info,
description=description,
parameters=parameters,
columns_comments=columns_comments,
boto3_session=session,
mode=mode,
transaction_id=transaction_id,
schema_evolution=schema_evolution,
catalog_versioning=catalog_versioning,
sep=sep,
projection_enabled=projection_enabled,
projection_types=projection_types,
projection_ranges=projection_ranges,
projection_values=projection_values,
projection_intervals=projection_intervals,
projection_digits=projection_digits,
projection_storage_location_template=None,
catalog_table_input=catalog_table_input,
catalog_id=catalog_id,
compression=pandas_kwargs.get("compression"),
skip_header_line_count=None,
serde_library=None,
serde_parameters=None,
)
catalog_table_input = catalog._get_table_input( # pylint: disable=protected-access
database=database,
table=table,
boto3_session=session,
transaction_id=transaction_id,
catalog_id=catalog_id,
)
paths, partitions_values = _to_dataset(
func=_to_text,
concurrent_partitioning=concurrent_partitioning,
df=df,
path_root=path, # type: ignore
index=index,
sep=sep,
compression=compression,
catalog_id=catalog_id,
database=database,
table=table,
table_type=table_type,
transaction_id=transaction_id,
filename_prefix=filename_prefix,
use_threads=use_threads,
partition_cols=partition_cols,
partitions_types=partitions_types,
bucketing_info=bucketing_info,
mode=mode,
boto3_session=session,
s3_additional_kwargs=s3_additional_kwargs,
file_format="csv",
quoting=quoting,
escapechar=escapechar,
header=header,
date_format=date_format,
**pd_kwargs,
)
if database and table:
try:
serde_info: Dict[str, Any] = {}
if catalog_table_input:
serde_info = catalog_table_input["StorageDescriptor"][
"SerdeInfo"]
serde_library: Optional[str] = serde_info.get(
"SerializationLibrary", None)
serde_parameters: Optional[Dict[str, str]] = serde_info.get(
"Parameters", None)
catalog._create_csv_table( # pylint: disable=protected-access
database=database,
table=table,
path=path,
columns_types=columns_types,
table_type=table_type,
partitions_types=partitions_types,
bucketing_info=bucketing_info,
description=description,
parameters=parameters,
columns_comments=columns_comments,
boto3_session=session,
mode=mode,
transaction_id=transaction_id,
catalog_versioning=catalog_versioning,
schema_evolution=schema_evolution,
sep=sep,
projection_enabled=projection_enabled,
projection_types=projection_types,
projection_ranges=projection_ranges,
projection_values=projection_values,
projection_intervals=projection_intervals,
projection_digits=projection_digits,
projection_storage_location_template=None,
catalog_table_input=catalog_table_input,
catalog_id=catalog_id,
compression=pandas_kwargs.get("compression"),
skip_header_line_count=True if header else None,
serde_library=serde_library,
serde_parameters=serde_parameters,
)
if partitions_values and (regular_partitions is
True) and (table_type != "GOVERNED"):
_logger.debug("partitions_values:\n%s", partitions_values)
catalog.add_csv_partitions(
database=database,
table=table,
partitions_values=partitions_values,
bucketing_info=bucketing_info,
boto3_session=session,
sep=sep,
serde_library=serde_library,
serde_parameters=serde_parameters,
catalog_id=catalog_id,
columns_types=columns_types,
compression=pandas_kwargs.get("compression"),
)
if commit_trans:
lakeformation.commit_transaction(
transaction_id=transaction_id,
boto3_session=boto3_session # type: ignore
)
except Exception:
_logger.debug(
"Catalog write failed, cleaning up S3 (paths: %s).", paths)
delete_objects(
path=paths,
use_threads=use_threads,
boto3_session=session,
s3_additional_kwargs=s3_additional_kwargs,
)
raise
return {"paths": paths, "partitions_values": partitions_values}
def to_parquet( # pylint: disable=too-many-arguments,too-many-locals,too-many-branches,too-many-statements
df: pd.DataFrame,
path: Optional[str] = None,
index: bool = False,
compression: Optional[str] = "snappy",
pyarrow_additional_kwargs: Optional[Dict[str, Any]] = None,
max_rows_by_file: Optional[int] = None,
use_threads: Union[bool, int] = True,
boto3_session: Optional[boto3.Session] = None,
s3_additional_kwargs: Optional[Dict[str, Any]] = None,
sanitize_columns: bool = False,
dataset: bool = False,
filename_prefix: Optional[str] = None,
partition_cols: Optional[List[str]] = None,
bucketing_info: Optional[Tuple[List[str], int]] = None,
concurrent_partitioning: bool = False,
mode: Optional[str] = None,
catalog_versioning: bool = False,
schema_evolution: bool = True,
database: Optional[str] = None,
table: Optional[str] = None,
table_type: Optional[str] = None,
transaction_id: Optional[str] = None,
dtype: Optional[Dict[str, str]] = None,
description: Optional[str] = None,
parameters: Optional[Dict[str, str]] = None,
columns_comments: Optional[Dict[str, str]] = None,
regular_partitions: bool = True,
projection_enabled: bool = False,
projection_types: Optional[Dict[str, str]] = None,
projection_ranges: Optional[Dict[str, str]] = None,
projection_values: Optional[Dict[str, str]] = None,
projection_intervals: Optional[Dict[str, str]] = None,
projection_digits: Optional[Dict[str, str]] = None,
catalog_id: Optional[str] = None,
) -> Dict[str, Union[List[str], Dict[str, List[str]]]]:
"""Write Parquet file or dataset on Amazon S3.
The concept of Dataset goes beyond the simple idea of ordinary files and enable more
complex features like partitioning and catalog integration (Amazon Athena/AWS Glue Catalog).
Note
----
This operation may mutate the original pandas dataframe in-place. To avoid this behaviour
please pass in a deep copy instead (i.e. `df.copy()`)
Note
----
If `database` and `table` arguments are passed, the table name and all column names
will be automatically sanitized using `wr.catalog.sanitize_table_name` and `wr.catalog.sanitize_column_name`.
Please, pass `sanitize_columns=True` to enforce this behaviour always.
Note
----
On `append` mode, the `parameters` will be upsert on an existing table.
Note
----
In case of `use_threads=True` the number of threads
that will be spawned will be gotten from os.cpu_count().
Parameters
----------
df: pandas.DataFrame
Pandas DataFrame https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.html
path : str, optional
S3 path (for file e.g. ``s3://bucket/prefix/filename.parquet``) (for dataset e.g. ``s3://bucket/prefix``).
Required if dataset=False or when dataset=True and creating a new dataset
index : bool
True to store the DataFrame index in file, otherwise False to ignore it.
compression: str, optional
Compression style (``None``, ``snappy``, ``gzip``).
pyarrow_additional_kwargs : Optional[Dict[str, Any]]
Additional parameters forwarded to pyarrow.
e.g. pyarrow_additional_kwargs={'coerce_timestamps': 'ns', 'use_deprecated_int96_timestamps': False,
'allow_truncated_timestamps'=False}
max_rows_by_file : int
Max number of rows in each file.
Default is None i.e. dont split the files.
(e.g. 33554432, 268435456)
use_threads : bool, int
True to enable concurrent requests, False to disable multiple threads.
If enabled os.cpu_count() will be used as the max number of threads.
If integer is provided, specified number is used.
boto3_session : boto3.Session(), optional
Boto3 Session. The default boto3 session will be used if boto3_session receive None.
s3_additional_kwargs : Optional[Dict[str, Any]]
Forwarded to botocore requests.
e.g. s3_additional_kwargs={'ServerSideEncryption': 'aws:kms', 'SSEKMSKeyId': 'YOUR_KMS_KEY_ARN'}
sanitize_columns : bool
True to sanitize columns names (using `wr.catalog.sanitize_table_name` and `wr.catalog.sanitize_column_name`)
or False to keep it as is.
True value behaviour is enforced if `database` and `table` arguments are passed.
dataset : bool
If True store a parquet dataset instead of a ordinary file(s)
If True, enable all follow arguments:
partition_cols, mode, database, table, description, parameters, columns_comments, concurrent_partitioning,
catalog_versioning, projection_enabled, projection_types, projection_ranges, projection_values,
projection_intervals, projection_digits, catalog_id, schema_evolution.
filename_prefix: str, optional
If dataset=True, add a filename prefix to the output files.
partition_cols: List[str], optional
List of column names that will be used to create partitions. Only takes effect if dataset=True.
bucketing_info: Tuple[List[str], int], optional
Tuple consisting of the column names used for bucketing as the first element and the number of buckets as the
second element.
Only `str`, `int` and `bool` are supported as column data types for bucketing.
concurrent_partitioning: bool
If True will increase the parallelism level during the partitions writing. It will decrease the
writing time and increase the memory usage.
https://aws-data-wrangler.readthedocs.io/en/2.13.0/tutorials/022%20-%20Writing%20Partitions%20Concurrently.html
mode: str, optional
``append`` (Default), ``overwrite``, ``overwrite_partitions``. Only takes effect if dataset=True.
For details check the related tutorial:
https://aws-data-wrangler.readthedocs.io/en/2.13.0/stubs/awswrangler.s3.to_parquet.html#awswrangler.s3.to_parquet
catalog_versioning : bool
If True and `mode="overwrite"`, creates an archived version of the table catalog before updating it.
schema_evolution : bool
If True allows schema evolution (new or missing columns), otherwise a exception will be raised. True by default.
(Only considered if dataset=True and mode in ("append", "overwrite_partitions"))
Related tutorial:
https://aws-data-wrangler.readthedocs.io/en/2.13.0/tutorials/014%20-%20Schema%20Evolution.html
database : str, optional
Glue/Athena catalog: Database name.
table : str, optional
Glue/Athena catalog: Table name.
table_type: str, optional
The type of the Glue Table. Set to EXTERNAL_TABLE if None.
transaction_id: str, optional
The ID of the transaction when writing to a Governed Table.
dtype : Dict[str, str], optional
Dictionary of columns names and Athena/Glue types to be casted.
Useful when you have columns with undetermined or mixed data types.
(e.g. {'col name': 'bigint', 'col2 name': 'int'})
description : str, optional
Glue/Athena catalog: Table description
parameters : Dict[str, str], optional
Glue/Athena catalog: Key/value pairs to tag the table.
columns_comments : Dict[str, str], optional
Glue/Athena catalog:
Columns names and the related comments (e.g. {'col0': 'Column 0.', 'col1': 'Column 1.', 'col2': 'Partition.'}).
regular_partitions : bool
Create regular partitions (Non projected partitions) on Glue Catalog.
Disable when you will work only with Partition Projection.
Keep enabled even when working with projections is useful to keep
Redshift Spectrum working with the regular partitions.
projection_enabled : bool
Enable Partition Projection on Athena (https://docs.aws.amazon.com/athena/latest/ug/partition-projection.html)
projection_types : Optional[Dict[str, str]]
Dictionary of partitions names and Athena projections types.
Valid types: "enum", "integer", "date", "injected"
https://docs.aws.amazon.com/athena/latest/ug/partition-projection-supported-types.html
(e.g. {'col_name': 'enum', 'col2_name': 'integer'})
projection_ranges: Optional[Dict[str, str]]
Dictionary of partitions names and Athena projections ranges.
https://docs.aws.amazon.com/athena/latest/ug/partition-projection-supported-types.html
(e.g. {'col_name': '0,10', 'col2_name': '-1,8675309'})
projection_values: Optional[Dict[str, str]]
Dictionary of partitions names and Athena projections values.
https://docs.aws.amazon.com/athena/latest/ug/partition-projection-supported-types.html
(e.g. {'col_name': 'A,B,Unknown', 'col2_name': 'foo,boo,bar'})
projection_intervals: Optional[Dict[str, str]]
Dictionary of partitions names and Athena projections intervals.
https://docs.aws.amazon.com/athena/latest/ug/partition-projection-supported-types.html
(e.g. {'col_name': '1', 'col2_name': '5'})
projection_digits: Optional[Dict[str, str]]
Dictionary of partitions names and Athena projections digits.
https://docs.aws.amazon.com/athena/latest/ug/partition-projection-supported-types.html
(e.g. {'col_name': '1', 'col2_name': '2'})
catalog_id : str, optional
The ID of the Data Catalog from which to retrieve Databases.
If none is provided, the AWS account ID is used by default.
Returns
-------
Dict[str, Union[List[str], Dict[str, List[str]]]]
Dictionary with:
'paths': List of all stored files paths on S3.
'partitions_values': Dictionary of partitions added with keys as S3 path locations
and values as a list of partitions values as str.
Examples
--------
Writing single file
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_parquet(
... df=pd.DataFrame({'col': [1, 2, 3]}),
... path='s3://bucket/prefix/my_file.parquet',
... )
{
'paths': ['s3://bucket/prefix/my_file.parquet'],
'partitions_values': {}
}
Writing single file encrypted with a KMS key
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_parquet(
... df=pd.DataFrame({'col': [1, 2, 3]}),
... path='s3://bucket/prefix/my_file.parquet',
... s3_additional_kwargs={
... 'ServerSideEncryption': 'aws:kms',
... 'SSEKMSKeyId': 'YOUR_KMS_KEY_ARN'
... }
... )
{
'paths': ['s3://bucket/prefix/my_file.parquet'],
'partitions_values': {}
}
Writing partitioned dataset
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_parquet(
... df=pd.DataFrame({
... 'col': [1, 2, 3],
... 'col2': ['A', 'A', 'B']
... }),
... path='s3://bucket/prefix',
... dataset=True,
... partition_cols=['col2']
... )
{
'paths': ['s3://.../col2=A/x.parquet', 's3://.../col2=B/y.parquet'],
'partitions_values: {
's3://.../col2=A/': ['A'],
's3://.../col2=B/': ['B']
}
}
Writing bucketed dataset
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_parquet(
... df=pd.DataFrame({
... 'col': [1, 2, 3],
... 'col2': ['A', 'A', 'B']
... }),
... path='s3://bucket/prefix',
... dataset=True,
... bucketing_info=(["col2"], 2)
... )
{
'paths': ['s3://.../x_bucket-00000.csv', 's3://.../col2=B/x_bucket-00001.csv'],
'partitions_values: {}
}
Writing dataset to S3 with metadata on Athena/Glue Catalog.
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_parquet(
... df=pd.DataFrame({
... 'col': [1, 2, 3],
... 'col2': ['A', 'A', 'B']
... }),
... path='s3://bucket/prefix',
... dataset=True,
... partition_cols=['col2'],
... database='default', # Athena/Glue database
... table='my_table' # Athena/Glue table
... )
{
'paths': ['s3://.../col2=A/x.parquet', 's3://.../col2=B/y.parquet'],
'partitions_values: {
's3://.../col2=A/': ['A'],
's3://.../col2=B/': ['B']
}
}
Writing dataset to Glue governed table
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_parquet(
... df=pd.DataFrame({
... 'col': [1, 2, 3],
... 'col2': ['A', 'A', 'B'],
... 'col3': [None, None, None]
... }),
... dataset=True,
... mode='append',
... database='default', # Athena/Glue database
... table='my_table', # Athena/Glue table
... table_type='GOVERNED',
... transaction_id="xxx",
... )
{
'paths': ['s3://.../x.parquet'],
'partitions_values: {}
}
Writing dataset casting empty column data type
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_parquet(
... df=pd.DataFrame({
... 'col': [1, 2, 3],
... 'col2': ['A', 'A', 'B'],
... 'col3': [None, None, None]
... }),
... path='s3://bucket/prefix',
... dataset=True,
... database='default', # Athena/Glue database
... table='my_table' # Athena/Glue table
... dtype={'col3': 'date'}
... )
{
'paths': ['s3://.../x.parquet'],
'partitions_values: {}
}
"""
_validate_args(
df=df,
table=table,
database=database,
dataset=dataset,
path=path,
partition_cols=partition_cols,
bucketing_info=bucketing_info,
mode=mode,
description=description,
parameters=parameters,
columns_comments=columns_comments,
)
# Evaluating compression
if _COMPRESSION_2_EXT.get(compression, None) is None:
raise exceptions.InvalidCompression(f"{compression} is invalid, please use None, 'snappy' or 'gzip'.")
compression_ext: str = _COMPRESSION_2_EXT[compression]
# Initializing defaults
partition_cols = partition_cols if partition_cols else []
dtype = dtype if dtype else {}
partitions_values: Dict[str, List[str]] = {}
mode = "append" if mode is None else mode
commit_trans: bool = False
if transaction_id:
table_type = "GOVERNED"
filename_prefix = filename_prefix + uuid.uuid4().hex if filename_prefix else uuid.uuid4().hex
cpus: int = _utils.ensure_cpu_count(use_threads=use_threads)
session: boto3.Session = _utils.ensure_session(session=boto3_session)
# Sanitize table to respect Athena's standards
if (sanitize_columns is True) or (database is not None and table is not None):
df, dtype, partition_cols = _sanitize(df=df, dtype=dtype, partition_cols=partition_cols)
# Evaluating dtype
catalog_table_input: Optional[Dict[str, Any]] = None
if database is not None and table is not None:
catalog_table_input = catalog._get_table_input( # pylint: disable=protected-access
database=database, table=table, boto3_session=session, transaction_id=transaction_id, catalog_id=catalog_id
)
catalog_path: Optional[str] = None
if catalog_table_input:
table_type = catalog_table_input["TableType"]
catalog_path = catalog_table_input["StorageDescriptor"]["Location"]
if path is None:
if catalog_path:
path = catalog_path
else:
raise exceptions.InvalidArgumentValue(
"Glue table does not exist in the catalog. Please pass the `path` argument to create it."
)
elif path and catalog_path:
if path.rstrip("/") != catalog_path.rstrip("/"):
raise exceptions.InvalidArgumentValue(
f"The specified path: {path}, does not match the existing Glue catalog table path: {catalog_path}"
)
if (table_type == "GOVERNED") and (not transaction_id):
_logger.debug("`transaction_id` not specified for GOVERNED table, starting transaction")
transaction_id = lakeformation.start_transaction(read_only=False, boto3_session=boto3_session)
commit_trans = True
df = _apply_dtype(df=df, dtype=dtype, catalog_table_input=catalog_table_input, mode=mode)
schema: pa.Schema = _data_types.pyarrow_schema_from_pandas(
df=df, index=index, ignore_cols=partition_cols, dtype=dtype
)
_logger.debug("schema: \n%s", schema)
if dataset is False:
paths = _to_parquet(
df=df,
path=path,
schema=schema,
index=index,
cpus=cpus,
compression=compression,
compression_ext=compression_ext,
pyarrow_additional_kwargs=pyarrow_additional_kwargs,
boto3_session=session,
s3_additional_kwargs=s3_additional_kwargs,
dtype=dtype,
max_rows_by_file=max_rows_by_file,
use_threads=use_threads,
)
else:
columns_types: Dict[str, str] = {}
partitions_types: Dict[str, str] = {}
if (database is not None) and (table is not None):
columns_types, partitions_types = _data_types.athena_types_from_pandas_partitioned(
df=df, index=index, partition_cols=partition_cols, dtype=dtype
)
if schema_evolution is False:
_utils.check_schema_changes(columns_types=columns_types, table_input=catalog_table_input, mode=mode)
if (catalog_table_input is None) and (table_type == "GOVERNED"):
catalog._create_parquet_table( # pylint: disable=protected-access
database=database,
table=table,
path=path, # type: ignore
columns_types=columns_types,
table_type=table_type,
partitions_types=partitions_types,
bucketing_info=bucketing_info,
compression=compression,
description=description,
parameters=parameters,
columns_comments=columns_comments,
boto3_session=session,
mode=mode,
transaction_id=transaction_id,
catalog_versioning=catalog_versioning,
projection_enabled=projection_enabled,
projection_types=projection_types,
projection_ranges=projection_ranges,
projection_values=projection_values,
projection_intervals=projection_intervals,
projection_digits=projection_digits,
projection_storage_location_template=None,
catalog_id=catalog_id,
catalog_table_input=catalog_table_input,
)
catalog_table_input = catalog._get_table_input( # pylint: disable=protected-access
database=database,
table=table,
boto3_session=session,
transaction_id=transaction_id,
catalog_id=catalog_id,
)
paths, partitions_values = _to_dataset(
func=_to_parquet,
concurrent_partitioning=concurrent_partitioning,
df=df,
path_root=path, # type: ignore
filename_prefix=filename_prefix,
index=index,
compression=compression,
compression_ext=compression_ext,
catalog_id=catalog_id,
database=database,
table=table,
table_type=table_type,
transaction_id=transaction_id,
pyarrow_additional_kwargs=pyarrow_additional_kwargs,
cpus=cpus,
use_threads=use_threads,
partition_cols=partition_cols,
partitions_types=partitions_types,
bucketing_info=bucketing_info,
dtype=dtype,
mode=mode,
boto3_session=session,
s3_additional_kwargs=s3_additional_kwargs,
schema=schema,
max_rows_by_file=max_rows_by_file,
)
if (database is not None) and (table is not None):
try:
catalog._create_parquet_table( # pylint: disable=protected-access
database=database,
table=table,
path=path, # type: ignore
columns_types=columns_types,
table_type=table_type,
partitions_types=partitions_types,
bucketing_info=bucketing_info,
compression=compression,
description=description,
parameters=parameters,
columns_comments=columns_comments,
boto3_session=session,
mode=mode,
transaction_id=transaction_id,
catalog_versioning=catalog_versioning,
projection_enabled=projection_enabled,
projection_types=projection_types,
projection_ranges=projection_ranges,
projection_values=projection_values,
projection_intervals=projection_intervals,
projection_digits=projection_digits,
projection_storage_location_template=None,
catalog_id=catalog_id,
catalog_table_input=catalog_table_input,
)
if partitions_values and (regular_partitions is True) and (table_type != "GOVERNED"):
_logger.debug("partitions_values:\n%s", partitions_values)
catalog.add_parquet_partitions(
database=database,
table=table,
partitions_values=partitions_values,
bucketing_info=bucketing_info,
compression=compression,
boto3_session=session,
catalog_id=catalog_id,
columns_types=columns_types,
)
if commit_trans:
lakeformation.commit_transaction(
transaction_id=transaction_id, boto3_session=boto3_session # type: ignore
)
except Exception:
_logger.debug("Catalog write failed, cleaning up S3 (paths: %s).", paths)
delete_objects(
path=paths,
use_threads=use_threads,
boto3_session=session,
s3_additional_kwargs=s3_additional_kwargs,
)
raise
return {"paths": paths, "partitions_values": partitions_values}
def to_json( # pylint: disable=too-many-arguments,too-many-locals,too-many-statements,too-many-branches
df: pd.DataFrame,
path: Optional[str] = None,
index: bool = True,
columns: Optional[List[str]] = None,
use_threads: Union[bool, int] = True,
boto3_session: Optional[boto3.Session] = None,
s3_additional_kwargs: Optional[Dict[str, Any]] = None,
sanitize_columns: bool = False,
dataset: bool = False,
filename_prefix: Optional[str] = None,
partition_cols: Optional[List[str]] = None,
bucketing_info: Optional[Tuple[List[str], int]] = None,
concurrent_partitioning: bool = False,
mode: Optional[str] = None,
catalog_versioning: bool = False,
schema_evolution: bool = True,
database: Optional[str] = None,
table: Optional[str] = None,
table_type: Optional[str] = None,
transaction_id: Optional[str] = None,
dtype: Optional[Dict[str, str]] = None,
description: Optional[str] = None,
parameters: Optional[Dict[str, str]] = None,
columns_comments: Optional[Dict[str, str]] = None,
regular_partitions: bool = True,
projection_enabled: bool = False,
projection_types: Optional[Dict[str, str]] = None,
projection_ranges: Optional[Dict[str, str]] = None,
projection_values: Optional[Dict[str, str]] = None,
projection_intervals: Optional[Dict[str, str]] = None,
projection_digits: Optional[Dict[str, str]] = None,
catalog_id: Optional[str] = None,
**pandas_kwargs: Any,
) -> Union[List[str], Dict[str, Union[List[str], Dict[str, List[str]]]]]:
"""Write JSON file on Amazon S3.
Note
----
In case of `use_threads=True` the number of threads
that will be spawned will be gotten from os.cpu_count().
Note
----
Compression: The minimum acceptable version to achive it is Pandas 1.2.0 that requires Python >= 3.7.1.
Parameters
----------
df: pandas.DataFrame
Pandas DataFrame https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.html
path : str
Amazon S3 path (e.g. s3://bucket/filename.json).
index : bool
Write row names (index).
columns : Optional[List[str]]
Columns to write.
use_threads : bool, int
True to enable concurrent requests, False to disable multiple threads.
If enabled os.cpu_count() will be used as the max number of threads.
If integer is provided, specified number is used.
boto3_session : boto3.Session(), optional
Boto3 Session. The default boto3 Session will be used if boto3_session receive None.
s3_additional_kwargs : Optional[Dict[str, Any]]
Forwarded to botocore requests.
e.g. s3_additional_kwargs={'ServerSideEncryption': 'aws:kms', 'SSEKMSKeyId': 'YOUR_KMS_KEY_ARN'}
sanitize_columns : bool
True to sanitize columns names or False to keep it as is.
True value is forced if `dataset=True`.
dataset : bool
If True store as a dataset instead of ordinary file(s)
If True, enable all follow arguments:
partition_cols, mode, database, table, description, parameters, columns_comments, concurrent_partitioning,
catalog_versioning, projection_enabled, projection_types, projection_ranges, projection_values,
projection_intervals, projection_digits, catalog_id, schema_evolution.
filename_prefix: str, optional
If dataset=True, add a filename prefix to the output files.
partition_cols: List[str], optional
List of column names that will be used to create partitions. Only takes effect if dataset=True.
bucketing_info: Tuple[List[str], int], optional
Tuple consisting of the column names used for bucketing as the first element and the number of buckets as the
second element.
Only `str`, `int` and `bool` are supported as column data types for bucketing.
concurrent_partitioning: bool
If True will increase the parallelism level during the partitions writing. It will decrease the
writing time and increase the memory usage.
https://aws-data-wrangler.readthedocs.io/en/2.13.0/tutorials/022%20-%20Writing%20Partitions%20Concurrently.html
mode : str, optional
``append`` (Default), ``overwrite``, ``overwrite_partitions``. Only takes effect if dataset=True.
For details check the related tutorial:
https://aws-data-wrangler.readthedocs.io/en/2.13.0/stubs/awswrangler.s3.to_parquet.html#awswrangler.s3.to_parquet
catalog_versioning : bool
If True and `mode="overwrite"`, creates an archived version of the table catalog before updating it.
schema_evolution : bool
If True allows schema evolution (new or missing columns), otherwise a exception will be raised.
(Only considered if dataset=True and mode in ("append", "overwrite_partitions"))
Related tutorial:
https://aws-data-wrangler.readthedocs.io/en/2.13.0/tutorials/014%20-%20Schema%20Evolution.html
database : str, optional
Glue/Athena catalog: Database name.
table : str, optional
Glue/Athena catalog: Table name.
table_type: str, optional
The type of the Glue Table. Set to EXTERNAL_TABLE if None
transaction_id: str, optional
The ID of the transaction when writing to a Governed Table.
dtype : Dict[str, str], optional
Dictionary of columns names and Athena/Glue types to be casted.
Useful when you have columns with undetermined or mixed data types.
(e.g. {'col name': 'bigint', 'col2 name': 'int'})
description : str, optional
Glue/Athena catalog: Table description
parameters : Dict[str, str], optional
Glue/Athena catalog: Key/value pairs to tag the table.
columns_comments : Dict[str, str], optional
Glue/Athena catalog:
Columns names and the related comments (e.g. {'col0': 'Column 0.', 'col1': 'Column 1.', 'col2': 'Partition.'}).
regular_partitions : bool
Create regular partitions (Non projected partitions) on Glue Catalog.
Disable when you will work only with Partition Projection.
Keep enabled even when working with projections is useful to keep
Redshift Spectrum working with the regular partitions.
projection_enabled : bool
Enable Partition Projection on Athena (https://docs.aws.amazon.com/athena/latest/ug/partition-projection.html)
projection_types : Optional[Dict[str, str]]
Dictionary of partitions names and Athena projections types.
Valid types: "enum", "integer", "date", "injected"
https://docs.aws.amazon.com/athena/latest/ug/partition-projection-supported-types.html
(e.g. {'col_name': 'enum', 'col2_name': 'integer'})
projection_ranges: Optional[Dict[str, str]]
Dictionary of partitions names and Athena projections ranges.
https://docs.aws.amazon.com/athena/latest/ug/partition-projection-supported-types.html
(e.g. {'col_name': '0,10', 'col2_name': '-1,8675309'})
projection_values: Optional[Dict[str, str]]
Dictionary of partitions names and Athena projections values.
https://docs.aws.amazon.com/athena/latest/ug/partition-projection-supported-types.html
(e.g. {'col_name': 'A,B,Unknown', 'col2_name': 'foo,boo,bar'})
projection_intervals: Optional[Dict[str, str]]
Dictionary of partitions names and Athena projections intervals.
https://docs.aws.amazon.com/athena/latest/ug/partition-projection-supported-types.html
(e.g. {'col_name': '1', 'col2_name': '5'})
projection_digits: Optional[Dict[str, str]]
Dictionary of partitions names and Athena projections digits.
https://docs.aws.amazon.com/athena/latest/ug/partition-projection-supported-types.html
(e.g. {'col_name': '1', 'col2_name': '2'})
catalog_id : str, optional
The ID of the Data Catalog from which to retrieve Databases.
If none is provided, the AWS account ID is used by default.
pandas_kwargs:
KEYWORD arguments forwarded to pandas.DataFrame.to_json(). You can NOT pass `pandas_kwargs` explicit, just add
valid Pandas arguments in the function call and Wrangler will accept it.
e.g. wr.s3.to_json(df, path, lines=True, date_format='iso')
https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.to_json.html
Returns
-------
List[str]
List of written files.
Examples
--------
Writing JSON file
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_json(
... df=pd.DataFrame({'col': [1, 2, 3]}),
... path='s3://bucket/filename.json',
... )
Writing JSON file using pandas_kwargs
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_json(
... df=pd.DataFrame({'col': [1, 2, 3]}),
... path='s3://bucket/filename.json',
... lines=True,
... date_format='iso'
... )
Writing CSV file encrypted with a KMS key
>>> import awswrangler as wr
>>> import pandas as pd
>>> wr.s3.to_json(
... df=pd.DataFrame({'col': [1, 2, 3]}),
... path='s3://bucket/filename.json',
... s3_additional_kwargs={
... 'ServerSideEncryption': 'aws:kms',
... 'SSEKMSKeyId': 'YOUR_KMS_KEY_ARN'
... }
... )
"""
if "pandas_kwargs" in pandas_kwargs:
raise exceptions.InvalidArgument(
"You can NOT pass `pandas_kwargs` explicit, just add valid "
"Pandas arguments in the function call and Wrangler will accept it."
"e.g. wr.s3.to_json(df, path, lines=True, date_format='iso')")
if pandas_kwargs.get("compression") and str(
pd.__version__) < LooseVersion("1.2.0"):
raise exceptions.InvalidArgument(
f"JSON compression on S3 is not supported for Pandas version {pd.__version__}. "
"The minimum acceptable version to achive it is Pandas 1.2.0 that requires Python >=3.7.1."
)
_validate_args(
df=df,
table=table,
database=database,
dataset=dataset,
path=path,
partition_cols=partition_cols,
bucketing_info=bucketing_info,
mode=mode,
description=description,
parameters=parameters,
columns_comments=columns_comments,
)
# Initializing defaults
partition_cols = partition_cols if partition_cols else []
dtype = dtype if dtype else {}
partitions_values: Dict[str, List[str]] = {}
mode = "append" if mode is None else mode
commit_trans: bool = False
if transaction_id:
table_type = "GOVERNED"
filename_prefix = filename_prefix + uuid.uuid4(
).hex if filename_prefix else uuid.uuid4().hex
session: boto3.Session = _utils.ensure_session(session=boto3_session)
# Sanitize table to respect Athena's standards
if (sanitize_columns is True) or (database is not None
and table is not None):
df, dtype, partition_cols = _sanitize(df=df,
dtype=dtype,
partition_cols=partition_cols)
# Evaluating dtype
catalog_table_input: Optional[Dict[str, Any]] = None
if database and table:
catalog_table_input = catalog._get_table_input( # pylint: disable=protected-access
database=database,
table=table,
boto3_session=session,
transaction_id=transaction_id,
catalog_id=catalog_id)
catalog_path: Optional[str] = None
if catalog_table_input:
table_type = catalog_table_input["TableType"]
catalog_path = catalog_table_input.get("StorageDescriptor",
{}).get("Location")
if path is None:
if catalog_path:
path = catalog_path
else:
raise exceptions.InvalidArgumentValue(
"Glue table does not exist in the catalog. Please pass the `path` argument to create it."
)
elif path and catalog_path:
if path.rstrip("/") != catalog_path.rstrip("/"):
raise exceptions.InvalidArgumentValue(
f"The specified path: {path}, does not match the existing Glue catalog table path: {catalog_path}"
)
if pandas_kwargs.get("compression") not in ("gzip", "bz2", None):
raise exceptions.InvalidArgumentCombination(
"If database and table are given, you must use one of these compressions: gzip, bz2 or None."
)
if (table_type == "GOVERNED") and (not transaction_id):
_logger.debug(
"`transaction_id` not specified for GOVERNED table, starting transaction"
)
transaction_id = lakeformation.start_transaction(
read_only=False, boto3_session=boto3_session)
commit_trans = True
df = _apply_dtype(df=df,
dtype=dtype,
catalog_table_input=catalog_table_input,
mode=mode)
if dataset is False:
return _to_text(
file_format="json",
df=df,
path=path,
use_threads=use_threads,
boto3_session=session,
s3_additional_kwargs=s3_additional_kwargs,
**pandas_kwargs,
)
compression: Optional[str] = pandas_kwargs.get("compression", None)
df = df[columns] if columns else df
columns_types: Dict[str, str] = {}
partitions_types: Dict[str, str] = {}
if database and table:
columns_types, partitions_types = _data_types.athena_types_from_pandas_partitioned(
df=df, index=index, partition_cols=partition_cols, dtype=dtype)
if schema_evolution is False:
_utils.check_schema_changes(columns_types=columns_types,
table_input=catalog_table_input,
mode=mode)
if (catalog_table_input is None) and (table_type == "GOVERNED"):
catalog._create_json_table( # pylint: disable=protected-access
database=database,
table=table,
path=path, # type: ignore
columns_types=columns_types,
table_type=table_type,
partitions_types=partitions_types,
bucketing_info=bucketing_info,
description=description,
parameters=parameters,
columns_comments=columns_comments,
boto3_session=session,
mode=mode,
transaction_id=transaction_id,
catalog_versioning=catalog_versioning,
schema_evolution=schema_evolution,
projection_enabled=projection_enabled,
projection_types=projection_types,
projection_ranges=projection_ranges,
projection_values=projection_values,
projection_intervals=projection_intervals,
projection_digits=projection_digits,
projection_storage_location_template=None,
catalog_table_input=catalog_table_input,
catalog_id=catalog_id,
compression=pandas_kwargs.get("compression"),
serde_library=None,
serde_parameters=None,
)
catalog_table_input = catalog._get_table_input( # pylint: disable=protected-access
database=database,
table=table,
boto3_session=session,
transaction_id=transaction_id,
catalog_id=catalog_id,
)
paths, partitions_values = _to_dataset(
func=_to_text,
concurrent_partitioning=concurrent_partitioning,
df=df,
path_root=path, # type: ignore
filename_prefix=filename_prefix,
index=index,
compression=compression,
catalog_id=catalog_id,
database=database,
table=table,
table_type=table_type,
transaction_id=transaction_id,
use_threads=use_threads,
partition_cols=partition_cols,
partitions_types=partitions_types,
bucketing_info=bucketing_info,
mode=mode,
boto3_session=session,
s3_additional_kwargs=s3_additional_kwargs,
file_format="json",
)
if database and table:
try:
serde_info: Dict[str, Any] = {}
if catalog_table_input:
serde_info = catalog_table_input["StorageDescriptor"][
"SerdeInfo"]
serde_library: Optional[str] = serde_info.get(
"SerializationLibrary", None)
serde_parameters: Optional[Dict[str, str]] = serde_info.get(
"Parameters", None)
catalog._create_json_table( # pylint: disable=protected-access
database=database,
table=table,
path=path, # type: ignore
columns_types=columns_types,
table_type=table_type,
partitions_types=partitions_types,
bucketing_info=bucketing_info,
description=description,
parameters=parameters,
columns_comments=columns_comments,
boto3_session=session,
mode=mode,
transaction_id=transaction_id,
catalog_versioning=catalog_versioning,
schema_evolution=schema_evolution,
projection_enabled=projection_enabled,
projection_types=projection_types,
projection_ranges=projection_ranges,
projection_values=projection_values,
projection_intervals=projection_intervals,
projection_digits=projection_digits,
projection_storage_location_template=None,
catalog_table_input=catalog_table_input,
catalog_id=catalog_id,
compression=pandas_kwargs.get("compression"),
serde_library=serde_library,
serde_parameters=serde_parameters,
)
if partitions_values and (regular_partitions is
True) and (table_type != "GOVERNED"):
_logger.debug("partitions_values:\n%s", partitions_values)
catalog.add_json_partitions(
database=database,
table=table,
partitions_values=partitions_values,
bucketing_info=bucketing_info,
boto3_session=session,
serde_library=serde_library,
serde_parameters=serde_parameters,
catalog_id=catalog_id,
columns_types=columns_types,
compression=pandas_kwargs.get("compression"),
)
if commit_trans:
lakeformation.commit_transaction(
transaction_id=transaction_id,
boto3_session=boto3_session # type: ignore
)
except Exception:
_logger.debug("Catalog write failed, cleaning up S3 (paths: %s).",
paths)
delete_objects(
path=paths,
use_threads=use_threads,
boto3_session=session,
s3_additional_kwargs=s3_additional_kwargs,
)
raise
return {"paths": paths, "partitions_values": partitions_values}