Pandas去重函数

pandas去重函数

• df.drop_duplicates?

  • Signature: df.drop_duplicates(subset=None, keep='first', inplace=False)

• Docstring:

  • Return DataFrame with duplicate rows removed, optionally only considering certain columns

Parameters

• subset : column label or sequence of labels, optional
  Only consider certain columns for identifying duplicates, by default use all of the columns

• keep : {‘first’, ‘last’, False}, default ‘first’

  • first : Drop duplicates except for the first occurrence.
  • last : Drop duplicates except for the last occurrence.
  • False : Drop all duplicates.

• inplace : boolean, default False Whether to drop duplicates in place or to return a copy

• Returns

deduplicated :DataFrame

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