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Python function to insert an space between a character and a number regex.
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Here is a Python function to insert an space between a character and a number regex

import re

def p_insert_space(s, regex):
    """
    Insert an space between a character and a number regex.
    """
    return re.sub(regex,'', s)

# Enter the string
s = 'hello world'

# Calling the function
print((p_insert_space(s, re.compile('[0-9]'))))

#Example Output
# hello world

#Remember to inspect code for bugs.