. The issue tells you that the Series returned by your operation holds no intrinsic truth value. Indeed, the operation will always return something and you have to chose what you actually. ValueError The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all(). SolveForum.com may not be responsible for the answers or solutions given to any question asked by the users. All Answers or responses are user generated answers and we do not have proof of its validity or correctness. Please vote for the answer that helped you in order. Then at line 31, python cant make sense of your code, because it cant compare, the two series objects with an integer value just like that. Now we come to lines 1119 - 1121, which. Dreaming Of Multiple Dead BodiesFinally and as a further external interpretation, the dream might also be a real person in your life who wishes bad things for you. Gabry Asks Error The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all(). While changing tables I'm trying to change some values of differents columns of a dataset, and in the end update the data and save them into a new 'name.csv' file. But in the for. Asked By Anonymous I have the following CSS items that I am trying to simultaneously change the hover effect for when rolling over .blocks-item .blocks-item .blocks. joinquant ValueError The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all().. Just to add some more explanation to this statement The exception is thrown when you want to get the bool of a pandas.Series >>> import pandas as pd >>> x pd.Series(1) >>> bool(x) ValueError The truth value of a Series is ambiguous.