Regex to select all that is inside of parenthesis including the parenthesis in Python

import re

def regex_select_parenthesis(string):
    """
    Regex to select all that is inside of parenthesis including the parenthesis.

    Parameters
    ----------
    string : str
        String to select from.

    Returns
    -------
    list
        List of all that is inside of parenthesis including the parenthesis.
    """

    #return the list of all that is inside of parenthesis including the parenthesis
    return re.findall(r'\([^()]*\)', string)

#example
result = regex_select_parenthesis('(a) (b) (c) (d)')
#output
print(result)  #['(a)', '(b)', '(c)', '(d)']