How do I filter out non-string keys in a dictionary in Python?

Question

I\'m new to Python and trying to figure out how to filter out all the non-string keys in a dictionary. I appreciate any help you can provide.

Answer 1

For sake of variety of answers, here is another method:

>>> d = {1: 'ONE', 2: 'TWO', 3: 'THREE', 'T': 'THREE'}
>>> b = {k:d[k] for k in filter(lambda s: type(s) is int, d.iterkeys())}
>>> b
{1: 'ONE', 2: 'TWO', 3: 'THREE'}