pandas.Series.isin

Series.isin(values)

Return a boolean Series showing whether each element in the Series is exactly contained in the passed sequence of values.

Parameters:

values : set or list-like

The sequence of values to test. Passing in a single string will raise a TypeError. Instead, turn a single string into a list of one element.

New in version 0.18.1.

Support for values as a set

Returns:

isin : Series (bool dtype)

Raises:

TypeError

• If values is a string

See also

pandas.DataFrame.isin

Examples

>>> s = pd.Series(list('abc'))
>>> s.isin(['a', 'c', 'e'])
0     True
1    False
2     True
dtype: bool

Passing a single string as s.isin('a') will raise an error. Use a list of one element instead:

>>> s.isin(['a'])
0     True
1    False
2    False
dtype: bool