How to concisely cascade through multiple regex statements in Python

Question

My dilemma: I\'m passing my function a string that I need to then perform numerous regex manipulations on. The logic is if there\'s a match in the first regex, do one thing

Answer 1

Generally speaking, in these sorts of situations, you want to make the code "data driven". That is, put the important information in a container, and loop through it.

In your case, the important information is (string, function) pairs.

import re

def fun1():
    print('fun1')

def fun2():
    print('fun2')

def fun3():
    print('fun3')

regex_handlers = [
    (r'regex1', fun1),
    (r'regex2', fun2),
    (r'regex3', fun3)
    ]

def example(string):
    for regex, fun in regex_handlers:
        if re.match(regex, string):
            fun()  # call the function
            break

example('regex2')