import inspect

def ex_func(func):
    eval('{0}()'.format(str(func)))
    log()


def func_1():
    """
    Doc of function
    :return:
    """
    # some comments
    pass


def log(string=None):
    print(inspect.getdoc(func_1))

if __name__ == '__main__':
    ex_func('func_1')

Doc of function

:return: