GroupBy.head()

GroupBy.head(n=5) [source]

Returns first n rows of each group.

Essentially equivalent to .apply(lambda x: x.head(n)), except ignores as_index flag.

Examples

>>> df = DataFrame([[1, 2], [1, 4], [5, 6]],
                   columns=['A', 'B'])
>>> df.groupby('A', as_index=False).head(1)
   A  B
0  1  2
2  5  6
>>> df.groupby('A').head(1)
   A  B
0  1  2
2  5  6

Links:

http://pandas.pydata.org/pandas-docs/version/0.19.2/generated/pandas.core.groupby.GroupBy.head.html

doc_Pandas

2025-01-10 15:47:30

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