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Jun 22, 2019
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DOC: df.astype example using dictionary #26994

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DOC: df.astype example using dictionary (#26990)
stevennic Jun 22, 2019
c2d1702
DOC: df.astype example using dictionary (#26990)
stevennic Jun 22, 2019
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25 changes: 25 additions & 0 deletions pandas/core/generic.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5622,6 +5622,31 @@ def astype(self, dtype, copy=True, errors='raise', **kwargs):

Examples
--------
Create a DataFrame:

>>> d = {'col1': [1, 2], 'col2': [3, 4]}
>>> df = pd.DataFrame(data=d)
>>> df.dtypes
col1 int64
col2 int64
dtype: object

Cast all columns to int32:

>>> df.astype('int32').dtypes
col1 int32
col2 int32
dtype: object

Cast col1 to int32 using a dictionary:

>>> df.astype({'col1': 'int32'}).dtypes
col1 int32
col2 int64
dtype: object

Create a series:

>>> ser = pd.Series([1, 2], dtype='int32')
>>> ser
0 1
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