pandas.Series.isin — pandas 0.25.3 documentation (original) (raw)
Series. isin(self, values)[source]¶
Check whether values are contained in Series.
Return a boolean Series showing whether each element in the Series matches an element in the passed sequence of values exactly.
| 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: | Series Series of booleans indicating if each element is in values. |
| Raises: | TypeError If values is a string |
Examples
s = pd.Series(['lama', 'cow', 'lama', 'beetle', 'lama', ... 'hippo'], name='animal') s.isin(['cow', 'lama']) 0 True 1 True 2 True 3 False 4 True 5 False Name: animal, dtype: bool
Passing a single string as s.isin('lama') will raise an error. Use a list of one element instead:
s.isin(['lama']) 0 True 1 False 2 True 3 False 4 True 5 False Name: animal, dtype: bool