in-operator

How to create a new column in a Pandas dataframe based on conditions using two existing columns i.e., multiple and/or operators in each condition? Question: I am working on improving some existing Python code using Numpy and Pandas and am still learning so need some help with this scenario. The existing code is very verbose …

Override Python's 'in' operator? Question: If I am creating my own class in Python, what function should I define so as to allow the use of the in operator, e.g. class MyClass(object): … m = MyClass() if 54 in m: … Asked By: astrofrog || Source Answers: MyClass.__contains__(self, item) Answered By: Ignacio Vazquez-Abrams A more …