classmethod Check.isin(allowed_values, **kwargs)[source]

Ensure only allowed values occur within a series.

This checks whether all elements of a data object are part of the set of elements of allowed values. If allowed values is a string, the set of elements consists of all distinct characters of the string. Thus only single characters which occur in allowed_values at least once can meet this condition. If you want to check for substrings use Check.str_contains().

  • allowed_values (Iterable) – The set of allowed values. May be any iterable.

  • kwargs – key-word arguments passed into the Check initializer.

Return type: