show_call.py

import re, sys

to_find = sys.argv[1]

def find_closing_paren(string, start):
    current = start
    num_open = 1

    for c in string[start:]:
        current += 1
        if c == '(':
            num_open += 1
        elif c == ')':
            num_open -= 1
        if num_open == 0:
            return current

for fn in sys.argv[2:]:
    with open(fn) as fd:
        content = fd.read()
        for m in re.finditer(to_find + r'\(', content):
            match = find_closing_paren(content, m.end())
            print content[m.start():match]