Use of if/else in Dataframe.assign() results in ValueError: The truth value of a SeriesCheck if string is in a pandas dataframePandas data frame ValueError: The truth value of a Series is ambiguousDataFrame column comparison raises ValueError: The truth value of a Series is ambiguous.Python: If statement return ValueErrorValueError in pandas: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all()pandas add columns ,note The truth value of a Series is ambiguousValueError (while creating a function in python): The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all()Loop return error that the true value of the series is ambiguous
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