Filter a list in python get integers

In case the list contains integers that are formatted as str, the isinstance() solutions would not work.

['Jack', '18', 'IM-101', '99.9']

I figured out the following alternative solution for that case:

list_of_numbers = []
for el in your_list:
    try:
        list_of_numbers.append(int(el))
    except ValueError:
        pass

You can find more details about this solution in this post, containing a similar question.

>>> x = ['Jack', 18, 'IM-101', 99.9]
>>> [e for e in x if isinstance(e, int)]
[18]