4 examples of 'pandas std' in Python

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387def std(self, axis=None, dtype=None, out=None, ddof=1, keepdims=False, skipna=True):
388 nv.validate_stat_ddof_func(
389 (), dict(dtype=dtype, out=out, keepdims=keepdims), fname="std"
390 )
391 return nanops.nanstd(self._ndarray, axis=axis, skipna=skipna, ddof=ddof)
1793def std(a,axis=None):
1794 return ma.asarray(a).std(axis=axis,ddof=1)
880def std(idadf):
881 """
882 See IdaDataFrame.std
883 """
884 columns = idadf._get_numerical_columns()
885 if not columns:
886 warnings.warn("%s has no numeric columns"%idadf.name)
887 return pd.Series()
888
889 std_tuple = _numeric_stats(idadf, "std", columns)
890
891 result = pd.Series(std_tuple)
892 result.index = columns
893
894 if isinstance(idadf, ibmdbpy.IdaSeries):
895 result = result[0]
896
897 return result
808@sdc_overload_method(DataFrameType, 'std')
809def std_overload(df, axis=None, skipna=None, level=None, ddof=1, numeric_only=None):
810 """
811 Intel Scalable Dataframe Compiler User Guide
812 ********************************************
813
814 Pandas API: pandas.DataFrame.std
815
816 Limitations
817 -----------
818 Parameters ``axis``, ``level`` and ``numeric_only`` are unsupported.
819
820 Examples
821 --------
822 .. literalinclude:: ../../../examples/dataframe/dataframe_std.py
823 :language: python
824 :lines: 35-
825 :caption: Return sample standard deviation over columns.
826 :name: ex_dataframe_std
827
828 .. command-output:: python ./dataframe/dataframe_std.py
829 :cwd: ../../../examples
830
831 .. seealso::
832 :ref:`Series.std `
833 Returns sample standard deviation over Series.
834 :ref:`Series.var `
835 Returns unbiased variance over Series.
836 :ref:`DataFrame.var `
837 Returns unbiased variance over DataFrame.
838
839 Intel Scalable Dataframe Compiler Developer Guide
840 *************************************************
841
842 Pandas DataFrame method :meth:`pandas.DataFrame.std` implementation.
843
844 .. only:: developer
845
846 Test: python -m sdc.runtests -k sdc.tests.test_dataframe.TestDataFrame.test_std*
847 """
848
849 name = 'std'
850
851 check_type(name, df, axis=axis, skipna=skipna, level=level, numeric_only=numeric_only, ddof=ddof)
852
853 params = {'axis': None, 'skipna': None, 'level': None, 'ddof': 1, 'numeric_only': None}
854 ser_par = {'skipna': 'skipna', 'level': 'level', 'ddof': 'ddof'}
855
856 return sdc_pandas_dataframe_reduce_columns(df, name, params, ser_par)

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