Find file in subdirectory

gistfile1.py

import os

def findFileInSubdirectory(filename, subdirectory=''):
    '''
        Find file in subdirectory
    '''
    if subdirectory:
        path = subdirectory
    else:
        path = os.getcwd()
    for root, dirs, names in os.walk(path):
        if filename in names:
            return os.path.join(root, filename)
    raise 'File not found'