def create_exprs(_input_col, _buckets, _func):
def count_exprs(_exprs):
return F.sum(F.when(_exprs, 1).otherwise(0))
_exprs = []
for i, b in enumerate(_buckets):
lower = b["lower"]
upper = b["upper"]
if is_numeric(lower):
lower = round(lower, 2)
if is_numeric(upper):
upper = round(upper, 2)
if len(_buckets) == 1:
count = count_exprs(
(_func(_input_col) == lower))
else:
if i == len(_buckets):
count = count_exprs(
(_func(_input_col) > lower) & (_func(_input_col) <= upper))
else:
count = count_exprs(
(_func(_input_col) >= lower) & (_func(_input_col) < upper))
info = F.create_map(F.lit("count"), count.cast("int"), F.lit("lower"), F.lit(lower), F.lit("upper"),
F.lit(upper)).alias(
"hist_agg" + "_" + _input_col + "_" + str(b["bucket"]))
_exprs.append(info)
_exprs = F.array(*_exprs).alias("hist" + _input_col)
return _exprs
def __init__(self, df, col_name, threshold, relative_error=RELATIVE_ERROR):
"""
:param df:
:param col_name:
:param threshold:
"""
if not is_numeric(threshold):
raise TypeError("Numeric expected")
if not is_numeric(relative_error):
raise TypeError("Numeric expected")
self.df = df
self.threshold = threshold
self.relative_error = relative_error
self.col_name = one_list_to_val(parse_columns(df, col_name))
self.z_score = df.cols.modified_z_score(col_name)
super().__init__()
def __init__(self, df, col_name, threshold):
"""
:para df:
:param col_name:
:param threshold:
"""
if not is_numeric(threshold):
raise TypeError("Numeric expected")
self.df = df
self.threshold = threshold
self.col_name = one_list_to_val(parse_columns(df, col_name))
self.tmp_col = name_col(col_name, "z_score")
self.z_score = self.df[self.col_name].cols.z_score()
# print("self.df_score",self.df_score)
# print("self.df",self.df)
super().__init__()
def __init__(self, df, col_name, threshold):
"""
:para df:
:param col_name:
:param threshold:
"""
if not is_dataframe(df):
raise TypeError("Spark Dataframe expected")
if not is_numeric(threshold):
raise TypeError("Numeric expected")
self.df = df
self.threshold = threshold
self.col_name = one_list_to_val(parse_columns(df, col_name))
self.tmp_col = name_col(col_name, "z_score")
self.df_score = self.z_score()
super().__init__(self.df_score, col_name, "z_score")
def parse_col_names_funcs_to_keys(data):
"""
Helper function that return a formatted json with function:value inside columns. Transform from
{'max_antiguedad_anos': 15,
'max_m2_superficie_construida': 1800000,
'min_antiguedad_anos': 2,
'min_m2_superficie_construida': 20}
to
{'m2_superficie_construida': {'min': 20, 'max': 1800000}, 'antiguedad_anos': {'min': 2, 'max': 15}}
:param data: json data
:return: json
"""
functions_array = [
"range", "count_uniques", "count_na", "min", "max", "stddev",
"kurtosis", "mean", "skewness", "sum", "variance",
"approx_count_distinct", "countDistinct", "na", "zeros", "percentile",
"count", "hist"
]
_result = {}
for k, v in data[0].items():
for f in functions_array:
temp_func_name = f + "_"
if k.startswith(temp_func_name):
_col_name = k[len(temp_func_name):]
if is_nan(v):
logger.print(
"'{FUNCTION}' function in '{COL_NAME}' column is returning 'nan'. Is that what you expected?. "
"Seems that '{COL_NAME}' has 'nan' values".format(
FUNCTION=f, COL_NAME=_col_name))
# If the value is numeric only get 5 decimals
elif is_numeric(v):
v = round(v, 5)
_result.setdefault(_col_name, {})[f] = v
break
return _result
def create(self,
obj,
method,
suffix=None,
output="df",
additional_method=None,
*args,
**kwargs):
"""
This is a helper function that output python tests for Spark DataFrames.
:param obj: Object to be tested
:param method: Method to be tested
:param suffix: The test name will be create using the method param. suffix will add a string in case you want
to customize the test name.
:param output: can be a 'df' or a 'json'
:param additional_method:
:param args: Arguments to be used in the method
:param kwargs: Keyword arguments to be used in the functions
:return:
"""
buffer = []
def add_buffer(value):
buffer.append("\t" + value)
# Create name
name = []
if method is not None:
name.append(method.replace(".", "_"))
if additional_method is not None:
name.append(additional_method)
if suffix is not None:
name.append(suffix)
test_name = "_".join(name)
func_test_name = "test_" + test_name + "()"
print("Creating {test} test function...".format(test=func_test_name))
logger.print(func_test_name)
if not output == "dict":
add_buffer("@staticmethod\n")
func_test_name = "test_" + test_name + "()"
else:
func_test_name = "test_" + test_name + "(self)"
filename = test_name + ".test"
add_buffer("def " + func_test_name + ":\n")
source = "source_df"
if obj is None:
# Use the main df
df_func = self.df
elif isinstance(obj, pyspark.sql.dataframe.DataFrame):
source_df = "\tsource_df=op.create.df(" + obj.export() + ")\n"
df_func = obj
add_buffer(source_df)
else:
source = get_var_name(obj)
df_func = obj
# Process simple arguments
_args = []
for v in args:
if is_str(v):
_args.append("'" + v + "'")
elif is_numeric(v):
_args.append(str(v))
elif is_list(v):
if is_list_of_strings(v):
lst = ["'" + x + "'" for x in v]
elif is_list_of_numeric(v) or is_list_of_tuples(v):
lst = [str(x) for x in v]
elif is_list_of_tuples(v):
lst = [str(x) for x in v]
_args.append('[' + ','.join(lst) + ']')
elif is_dict(v):
_args.append(json.dumps(v))
elif is_function(v):
_args.append(v.__qualname__)
else:
# _args.append(get_var_name(v))
_args.append(str(v))
# else:
# import marshal
# code_string = marshal.dumps(v.__code__)
# add_buffer("\tfunction = '" + code_string + "'\n")
# import marshal, types
#
# code = marshal.loads(code_string)
# func = types.FunctionType(code, globals(), "some_func_name")
print(_args)
_args = ','.join(_args)
_kwargs = []
# print(_args)
# Process keywords arguments
for k, v in kwargs.items():
if is_str(v):
v = "'" + v + "'"
_kwargs.append(k + "=" + str(v))
# Separator if we have positional and keyword arguments
separator = ""
if (not is_list_empty(args)) & (not is_list_empty(kwargs)):
separator = ","
if method is None:
add_buffer("\tactual_df = source_df\n")
else:
am = ""
if additional_method:
am = "." + additional_method + "()"
add_buffer("\tactual_df =" + source + "." + method + "(" + _args +
separator + ','.join(_kwargs) + ")" + am + "\n")
# Apply function to the dataframe
if method is None:
df_result = self.op.create.df(*args, **kwargs)
else:
# Here we construct the method to be applied to the source object
for f in method.split("."):
df_func = getattr(df_func, f)
df_result = df_func(*args, **kwargs)
# Additional Methods
if additional_method is not None:
df_result = getattr(df_result, additional_method)()
if output == "df":
df_result.table()
expected = "\texpected_df = op.create.df(" + df_result.export(
) + ")\n"
elif output == "json":
print(df_result)
if is_str(df_result):
df_result = "'" + df_result + "'"
else:
df_result = str(df_result)
add_buffer("\tactual_df =json_enconding(actual_df)\n")
expected = "\texpected_value =json_enconding(" + df_result + ")\n"
elif output == "dict":
print(df_result)
expected = "\texpected_value =" + str(df_result) + "\n"
else:
expected = "\t\n"
add_buffer(expected)
# Output
if output == "df":
add_buffer(
"\tassert (expected_df.collect() == actual_df.collect())\n")
elif output == "json":
add_buffer("\tassert(expected_value == actual_df)\n")
elif output == "dict":
add_buffer(
"\tself.assertDictEqual(deep_sort(expected_value), deep_sort(actual_df))\n"
)
filename = self.path + "//" + filename
if not os.path.exists(os.path.dirname(filename)):
try:
os.makedirs(os.path.dirname(filename))
except OSError as exc: # Guard against race condition
if exc.errno != errno.EEXIST:
raise
# Write file
test_file = open(filename, 'w', encoding='utf-8')
for b in buffer:
test_file.write(b)