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DOC: Expand docstrings for head / tail methods #16941

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merged 3 commits into from
Aug 21, 2017
Merged

DOC: Expand docstrings for head / tail methods #16941

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bf8277a
adding parameter description to head method docstring
yosukeBaya4 Jul 15, 2017
df5e26d
adding parameter description to tail method docstring
yosukeBaya4 Jul 15, 2017
50b9bb7
DOC: Address reviewer comments
gfyoung Aug 21, 2017
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26 changes: 24 additions & 2 deletions pandas/core/generic.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2978,14 +2978,36 @@ def filter(self, items=None, like=None, regex=None, axis=None):

def head(self, n=5):
"""
Returns first n rows
Return the first n rows.

Parameters
----------
n : int, default 5
Number of rows to select.

Returns
-------
obj_head : type of caller
The first n rows of the caller object.
"""

return self.iloc[:n]

def tail(self, n=5):
"""
Returns last n rows
Return the last n rows.

Parameters
----------
n : int, default 5
Number of rows to select.

Returns
-------
obj_tail : type of caller
The last n rows of the caller object.
"""

if n == 0:
return self.iloc[0:0]
return self.iloc[-n:]
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