How can I check if a string represents an int, without using try/except?

Question

Is there any way to tell whether a string represents an integer (e.g., \'3\', \'-17\' but not \'3.14\' or \'asf

Answer 1

This is probably the most straightforward and pythonic way to approach it in my opinion. I didn't see this solution and it's basically the same as the regex one, but without the regex.

def is_int(test):
    import string
    return not (set(test) - set(string.digits))