How to remove unnecessary parameters when formatting a string in Python?

Question

Python

Good day. There is a line like "Deal % (dam)s to enemy" and a huge kwarg'ov dictionary like
{some_value1: 112, some_value2:321, dam: 42 } formatting options from quargs?

Answer 1

>>> d = {'some_value1': 112, 'some_value2': 321, 'dam': 42, 'pam': 43}
>>> out = {k: d[k] for k in d if k in ('dam', 'pam')}
>>> out
{'dam': 42, 'pam': 43}
>>>

Answer 2

% seems not to be advised to use, an alternative to str.format
as for the question: it’s better to reconsider the architecture so that you know the data needed for the string, but if you want to pervert, you can parse the string with a regular expression, pull out the necessary keys and remove them from the dictionary