some_string.translate(str.maketrans('','','0123456789'))
In Python 2.* however we could say ...
some_string.translate(None, '0123456789')
My proposal is that if strip() and replace() are important enough to receive modules, then the arguably more common operation (in terms of programming tutorials, if not mainstream development) of just removing all instances of specified numbers, punctuation, or even letters etc from a list of characters should also.
I wholeheartedly admit that there are MANY other ways to do this (including RegEx and List Comprehensions), as listed in the StackOverflow answer below. However the same could be said for replace() and strip().