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# pandas.DataFrame.isin

`DataFrame.``isin`(values)

  Return boolean DataFrame showing whether each element in the DataFrame is contained in values.

  Parameters : | values : iterable, Series, DataFrame or dictionary The result will only be true at a location if all the labels match. If values is a Series, that’s the index. If values is a dictionary, the keys must be the column names, which must match. If values is a DataFrame, then both the index and column labels must match.
  Returns : | DataFrame of booleans

  Examples

  When `values` is a list:

      >>> df = DataFrame({'A': [1, 2, 3], 'B': ['a', 'b', 'f']})
      >>> df.isin([1, 3, 12, 'a'])
             A      B
      0   True   True
      1  False  False
      2   True  False

  When `values` is a dict:

      >>> df = DataFrame({'A': [1, 2, 3], 'B': [1, 4, 7]})
      >>> df.isin({'A': [1, 3], 'B': [4, 7, 12]})
             A      B
      0   True  False  # Note that B didn't match the 1 here.
      1  False   True
      2   True   True

  When `values` is a Series or DataFrame:

      >>> df = DataFrame({'A': [1, 2, 3], 'B': ['a', 'b', 'f']})
      >>> other = DataFrame({'A': [1, 3, 3, 2], 'B': ['e', 'f', 'f', 'e']})
      >>> df.isin(other)
             A      B
      0   True  False
      1  False  False  # Column A in `other` has a 3, but not at index 1.
      2   True   True

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