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DOC: Reset index examples #16967

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DOC: Reset index examples #16967

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2a51e2b
DOC: added examples to reset_index
aernlund Jul 15, 2017
4838155
DOC: added examples to reset_index
aernlund Jul 15, 2017
3c6a4b6
DOC: added examples to reset_index
aernlund Jul 15, 2017
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31 changes: 31 additions & 0 deletions pandas/core/frame.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3020,6 +3020,37 @@ def reset_index(self, level=None, drop=False, inplace=False, col_level=0,
Returns
-------
resetted : DataFrame

Examples
--------
>>> df = pd.DataFrame({'a': [1, 2, 3, 4], 'b': [5, 6, 7, 8]},
... index=pd.Index(['a', 'b', 'c', 'd'],
... name='idx'))
>>> df.reset_index()
idx a b
0 a 1 5
1 b 2 6
2 c 3 7
3 d 4 8
>>> arrays = [np.array(['bar', 'bar', 'baz', 'baz', 'foo',
... 'foo', 'qux', 'qux']),
... np.array(['one', 'two', 'one', 'two', 'one', 'two',
... 'one', 'two'])]
>>> df2 = pd.DataFrame(
... np.random.randn(8, 4),
... index=pd.MultiIndex.from_arrays(arrays,
... names=['a', 'b']))
>>> df2.reset_index(level='a')
a 0 1 2 3
b
one bar -1.099413 0.291838 0.598198 0.162181
two bar -0.312184 -0.119904 0.250360 0.364378
one baz 0.713596 -0.490636 0.074967 -0.297857
two baz 0.998397 0.524499 -2.228976 0.901155
one foo 0.923204 0.920695 1.264488 1.476921
two foo -1.566922 0.783278 -0.073656 0.266027
one qux -0.230470 0.109800 -1.383409 0.048421
two qux -0.865993 -0.865984 0.705367 -0.170446
"""
inplace = validate_bool_kwarg(inplace, 'inplace')
if inplace:
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30 changes: 30 additions & 0 deletions pandas/core/series.py
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Original file line number Diff line number Diff line change
Expand Up @@ -948,6 +948,36 @@ def reset_index(self, level=None, drop=False, name=None, inplace=False):
Returns
----------
resetted : DataFrame, or Series if drop == True

Examples
--------
>>> s = pd.Series([1, 2, 3, 4], index=pd.Index(['a', 'b', 'c', 'd'],
... name = 'idx'))
>>> s.reset_index()
index 0
0 0 1
1 1 2
2 2 3
3 3 4
>>> arrays = [np.array(['bar', 'bar', 'baz', 'baz', 'foo',
... 'foo', 'qux', 'qux']),
... np.array(['one', 'two', 'one', 'two', 'one', 'two',
... 'one', 'two'])]
>>> s2 = pd.Series(
... np.random.randn(8),
... index=pd.MultiIndex.from_arrays(arrays,
... names=['a', 'b']))
>>> s2.reset_index(level='a')
a 0
b
one bar -0.286320
two bar -0.587934
one baz 0.710491
two baz -1.429006
one foo 0.790700
two foo 0.824863
one qux -0.718963
two qux -0.055028
"""
inplace = validate_bool_kwarg(inplace, 'inplace')
if drop:
Expand Down