def test_expand_user(self):
filename = '~/sometest'
expanded_name = common._expand_user(filename)
self.assertNotEqual(expanded_name, filename)
self.assertTrue(isabs(expanded_name))
self.assertEqual(os.path.expanduser(filename), expanded_name)
def test_expand_user(self):
filename = "~/sometest"
expanded_name = icom._expand_user(filename)
assert expanded_name != filename
assert os.path.isabs(expanded_name)
assert os.path.expanduser(filename) == expanded_name
def test_expand_user(self):
filename = '~/sometest'
expanded_name = icom._expand_user(filename)
assert expanded_name != filename
assert os.path.isabs(expanded_name)
assert os.path.expanduser(filename) == expanded_name
def test_expand_user(self):
filename = '~/sometest'
expanded_name = common._expand_user(filename)
self.assertNotEqual(expanded_name, filename)
assert isabs(expanded_name)
assert os.path.expanduser(filename) == expanded_name
def test_expand_user(self):
filename = '~/sometest'
expanded_name = common._expand_user(filename)
assert expanded_name != filename
assert isabs(expanded_name)
assert os.path.expanduser(filename) == expanded_name
def test_expand_user_normal_path(self):
filename = '/somefolder/sometest'
expanded_name = common._expand_user(filename)
self.assertEqual(expanded_name, filename)
self.assertNotIn('~', expanded_name)
self.assertEqual(os.path.expanduser(filename), expanded_name)
def read(
self, path, columns=None, storage_options: StorageOptions = None, **kwargs
):
if is_fsspec_url(path) and "filesystem" not in kwargs:
import_optional_dependency("fsspec")
import fsspec.core
fs, path = fsspec.core.url_to_fs(path, **(storage_options or {}))
should_close = False
else:
if storage_options:
raise ValueError(
"storage_options passed with buffer or non-fsspec filepath"
)
fs = kwargs.pop("filesystem", None)
should_close = False
path = _expand_user(path)
if not fs:
path, _, _, should_close = get_filepath_or_buffer(path)
kwargs["use_pandas_metadata"] = True
result = self.api.parquet.read_table(
path, columns=columns, filesystem=fs, **kwargs
).to_pandas()
if should_close:
path.close()
return result
def test_expand_user_normal_path(self):
filename = '/somefolder/sometest'
expanded_name = common._expand_user(filename)
self.assertEqual(expanded_name, filename)
self.assertNotIn('~', expanded_name)
self.assertEqual(os.path.expanduser(filename), expanded_name)
def write(
self,
df: DataFrame,
path: FilePathOrBuffer[AnyStr],
compression: Optional[str] = "snappy",
index: Optional[bool] = None,
storage_options: StorageOptions = None,
partition_cols: Optional[List[str]] = None,
**kwargs,
):
self.validate_dataframe(df)
from_pandas_kwargs: Dict[str, Any] = {
"schema": kwargs.pop("schema", None)
}
if index is not None:
from_pandas_kwargs["preserve_index"] = index
table = self.api.Table.from_pandas(df, **from_pandas_kwargs)
if is_fsspec_url(path) and "filesystem" not in kwargs:
# make fsspec instance, which pyarrow will use to open paths
import_optional_dependency("fsspec")
import fsspec.core
fs, path = fsspec.core.url_to_fs(path, **(storage_options or {}))
kwargs["filesystem"] = fs
else:
if storage_options:
raise ValueError(
"storage_options passed with file object or non-fsspec file path"
)
path = _expand_user(path)
if partition_cols is not None:
# writes to multiple files under the given path
self.api.parquet.write_to_dataset(
table,
path,
compression=compression,
partition_cols=partition_cols,
**kwargs,
)
else:
# write to single output file
self.api.parquet.write_table(table,
path,
compression=compression,
**kwargs)
def write(
self,
df: DataFrame,
path,
compression="snappy",
index: Optional[bool] = None,
partition_cols=None,
**kwargs,
):
self.validate_dataframe(df)
from_pandas_kwargs: Dict[str, Any] = {
"schema": kwargs.pop("schema", None)
}
if index is not None:
from_pandas_kwargs["preserve_index"] = index
table = self.api.Table.from_pandas(df, **from_pandas_kwargs)
if is_fsspec_url(path) and "filesystem" not in kwargs:
# make fsspec instance, which pyarrow will use to open paths
import_optional_dependency("fsspec")
import fsspec.core
fs, path = fsspec.core.url_to_fs(path)
kwargs["filesystem"] = fs
else:
path = _expand_user(path)
if partition_cols is not None:
# writes to multiple files under the given path
self.api.parquet.write_to_dataset(
table,
path,
compression=compression,
partition_cols=partition_cols,
**kwargs,
)
else:
# write to single output file
self.api.parquet.write_table(table,
path,
compression=compression,
**kwargs)
def test_expand_user_normal_path(self):
filename = "/somefolder/sometest"
expanded_name = icom._expand_user(filename)
assert expanded_name == filename
assert os.path.expanduser(filename) == expanded_name
def __init__(self,
obj,
path_or_buf=None,
sep=",",
na_rep='',
float_format=None,
cols=None,
header=True,
index=True,
index_label=None,
mode='w',
nanRep=None,
encoding=None,
compression=None,
quoting=None,
line_terminator='\n',
chunksize=None,
tupleize_cols=False,
quotechar='"',
date_format=None,
doublequote=True,
escapechar=None,
decimal='.'):
self.obj = obj
if path_or_buf is None:
path_or_buf = StringIO()
self.path_or_buf = _expand_user(_stringify_path(path_or_buf))
self.sep = sep
self.na_rep = na_rep
self.float_format = float_format
self.decimal = decimal
self.header = header
self.index = index
self.index_label = index_label
self.mode = mode
self.encoding = encoding
self.compression = compression
if quoting is None:
quoting = csvlib.QUOTE_MINIMAL
self.quoting = quoting
if quoting == csvlib.QUOTE_NONE:
# prevents crash in _csv
quotechar = None
self.quotechar = quotechar
self.doublequote = doublequote
self.escapechar = escapechar
self.line_terminator = line_terminator
self.date_format = date_format
self.tupleize_cols = tupleize_cols
self.has_mi_columns = (isinstance(obj.columns, MultiIndex)
and not self.tupleize_cols)
# validate mi options
if self.has_mi_columns:
if cols is not None:
raise TypeError("cannot specify cols with a MultiIndex on the "
"columns")
if cols is not None:
if isinstance(cols, Index):
cols = cols.to_native_types(na_rep=na_rep,
float_format=float_format,
date_format=date_format,
quoting=self.quoting)
else:
cols = list(cols)
self.obj = self.obj.loc[:, cols]
# update columns to include possible multiplicity of dupes
# and make sure sure cols is just a list of labels
cols = self.obj.columns
if isinstance(cols, Index):
cols = cols.to_native_types(na_rep=na_rep,
float_format=float_format,
date_format=date_format,
quoting=self.quoting)
else:
cols = list(cols)
# save it
self.cols = cols
# preallocate data 2d list
self.blocks = self.obj._data.blocks
ncols = sum(b.shape[0] for b in self.blocks)
self.data = [None] * ncols
if chunksize is None:
chunksize = (100000 // (len(self.cols) or 1)) or 1
self.chunksize = int(chunksize)
self.data_index = obj.index
if (isinstance(self.data_index, (DatetimeIndex, PeriodIndex))
and date_format is not None):
self.data_index = Index([
x.strftime(date_format) if notna(x) else ''
for x in self.data_index
])
self.nlevels = getattr(self.data_index, 'nlevels', 1)
if not index:
self.nlevels = 0
def __init__(self, obj, path_or_buf=None, sep=",", na_rep='',
float_format=None, cols=None, header=True, index=True,
index_label=None, mode='w', nanRep=None, encoding=None,
compression=None, quoting=None, line_terminator='\n',
chunksize=None, tupleize_cols=False, quotechar='"',
date_format=None, doublequote=True, escapechar=None,
decimal='.'):
self.obj = obj
if path_or_buf is None:
path_or_buf = StringIO()
self.path_or_buf = _expand_user(_stringify_path(path_or_buf))
self.sep = sep
self.na_rep = na_rep
self.float_format = float_format
self.decimal = decimal
self.header = header
self.index = index
self.index_label = index_label
self.mode = mode
self.encoding = encoding
self.compression = compression
if quoting is None:
quoting = csvlib.QUOTE_MINIMAL
self.quoting = quoting
if quoting == csvlib.QUOTE_NONE:
# prevents crash in _csv
quotechar = None
self.quotechar = quotechar
self.doublequote = doublequote
self.escapechar = escapechar
self.line_terminator = line_terminator
self.date_format = date_format
self.tupleize_cols = tupleize_cols
self.has_mi_columns = (isinstance(obj.columns, MultiIndex) and
not self.tupleize_cols)
# validate mi options
if self.has_mi_columns:
if cols is not None:
raise TypeError("cannot specify cols with a MultiIndex on the "
"columns")
if cols is not None:
if isinstance(cols, Index):
cols = cols.to_native_types(na_rep=na_rep,
float_format=float_format,
date_format=date_format,
quoting=self.quoting)
else:
cols = list(cols)
self.obj = self.obj.loc[:, cols]
# update columns to include possible multiplicity of dupes
# and make sure sure cols is just a list of labels
cols = self.obj.columns
if isinstance(cols, Index):
cols = cols.to_native_types(na_rep=na_rep,
float_format=float_format,
date_format=date_format,
quoting=self.quoting)
else:
cols = list(cols)
# save it
self.cols = cols
# preallocate data 2d list
self.blocks = self.obj._data.blocks
ncols = sum(b.shape[0] for b in self.blocks)
self.data = [None] * ncols
if chunksize is None:
chunksize = (100000 // (len(self.cols) or 1)) or 1
self.chunksize = int(chunksize)
self.data_index = obj.index
if (isinstance(self.data_index, (DatetimeIndex, PeriodIndex)) and
date_format is not None):
self.data_index = Index([x.strftime(date_format) if notna(x) else
'' for x in self.data_index])
self.nlevels = getattr(self.data_index, 'nlevels', 1)
if not index:
self.nlevels = 0
def test_expand_user_normal_path(self):
filename = '/somefolder/sometest'
expanded_name = icom._expand_user(filename)
assert expanded_name == filename
assert os.path.expanduser(filename) == expanded_name
def to_string(
self,
buf=None,
na_rep="NaN",
float_format=None,
header=True,
index=True,
length=False,
dtype=False,
name=False,
max_rows=None,
min_rows=None,
) -> Optional[str]:
"""
Render a string representation of the Series.
Follows pandas implementation except when ``max_rows=None``. In this scenario, we set ``max_rows={0}`` to avoid
accidentally dumping an entire index. This can be overridden by explicitly setting ``max_rows``.
See Also
--------
:pandas_api_docs:`pandas.Series.to_string`
for argument details.
"""
# In pandas calling 'to_string' without max_rows set, will dump ALL rows - we avoid this
# by limiting rows by default.
num_rows = len(self) # avoid multiple calls
if num_rows <= DEFAULT_NUM_ROWS_DISPLAYED:
if max_rows is None:
max_rows = num_rows
else:
max_rows = min(num_rows, max_rows)
elif max_rows is None:
warnings.warn(
f"Series.to_string called without max_rows set "
f"- this will return entire index results. "
f"Setting max_rows={DEFAULT_NUM_ROWS_DISPLAYED}"
f" overwrite if different behaviour is required.",
UserWarning,
)
max_rows = DEFAULT_NUM_ROWS_DISPLAYED
# because of the way pandas handles max_rows=0, not having this throws an error
# see eland issue #56
if max_rows == 0:
max_rows = 1
# Create a slightly bigger dataframe than display
temp_series = self._build_repr(max_rows + 1)
if buf is not None:
_buf = _expand_user(stringify_path(buf))
else:
_buf = StringIO()
if num_rows == 0:
# Empty series are rendered differently than
# series with items. We can luckily use our
# example series in this case.
temp_series.head(0).to_string(
buf=_buf,
na_rep=na_rep,
float_format=float_format,
header=header,
index=index,
length=length,
dtype=dtype,
name=name,
max_rows=max_rows,
)
else:
# Create repr of fake series without name, length, dtype summary
temp_series.to_string(
buf=_buf,
na_rep=na_rep,
float_format=float_format,
header=header,
index=index,
length=False,
dtype=False,
name=False,
max_rows=max_rows,
)
# Create the summary
footer = []
if name and self.name is not None:
footer.append(f"Name: {self.name}")
if length and len(self) > max_rows:
footer.append(f"Length: {len(self.index)}")
if dtype:
footer.append(f"dtype: {temp_series.dtype}")
if footer:
_buf.write(f"\n{', '.join(footer)}")
if buf is None:
result = _buf.getvalue()
return result
def test_expand_user_normal_path(self):
filename = '/somefolder/sometest'
expanded_name = common._expand_user(filename)
assert expanded_name == filename
assert os.path.expanduser(filename) == expanded_name
