Aug 22, 2009 · How can I filter items from a list in Python? [duplicate] Asked 16 years, 6 months ago Modified 4 years, 1 month ago Viewed 59k times

I have a list of values which I need to filter given the values in a list of booleans: list_a = [1, 2, 4, 6] filter = [True, False, True, False] I generate a new filtered list with the following l...

11 If your data repeats a lot of values, try using the 'categorical' data type for that column and then applying boolean filtering. Much more flexible than using indices and, at least in my case, much faster.

I have a pandas dataframe and I want to filter the whole df based on the value of two columns in the data frame. I want to get back all rows and columns where IBRD or IMF != 0. alldata_balance =

Apr 7, 2014 · Filtering Pandas DataFrames on dates Asked 11 years, 10 months ago Modified 1 year, 3 months ago Viewed 1.0m times

Jan 28, 2010 · This simple filtering can be achieved in many ways with Python. The best approach is to use "list comprehensions" as follows:

Aug 10, 2014 · Filtering multiple items in a multi-index Pandas dataframe Asked 11 years, 6 months ago Modified 1 year, 1 month ago Viewed 146k times

I need to make a function that takes two strings as imnput and returns a copy of str 1 with all characters from str2 removed. First thing is to iterate over str1 with a for loop, then compare...

Oct 17, 2019 · Suppose I have a NumPy array arr that I want to element-wise filter (reduce) depending on the truth value of a (broadcastable) function, e.g. I want to get only values below a certain …

Jul 22, 2015 · I'd like to filter a CSV file (without headers) containing hundreds of rows based on the value in column 12. Values that filter these rows contain data like "00GG", "05FT", "66DM" and 10 …