#!/usr/bin/python -O
import os
import os.path
import sys
import imp

module = sys.argv[1].split('.')
module[0] = imp.find_module(module[0])[1]
try:
	filename = reduce(lambda a,b: imp.find_module(b, [a])[1], module)
except ImportError:
	filename = reduce(lambda a,b: imp.find_module(b, [a])[1], module[:-1])

print filename