Remove file from directory if it's the only one there including sub-directories.

rm_only_one_file.py

#!/bin/env/python
# -*- encoding: utf8 -*-
# Remove file from directory if it's the only one there including sub-directories.
# usage: script.py <file to find> <directory>
# script.py readme.txt /stuff/files/misc

import os
import sys

fn = None

if len(sys.argv) > 1:
  fn = sys.argv[1]

if fn == "":
  fn = None

if fn is None:
  print "invalid filename"
  sys.exit(1)

topdir = sys.argv[2]

if not os.path.isdir(topdir):
  print "invalid directory"
  sys.exit(1)

for dirpath, dirnames, files in os.walk(topdir):
  if len(files) == 1 and files[0].lower() == fn.lower() and len(dirnames) == 0:
    filename = os.path.join(dirpath, files[0])
    os.remove(filename)
    print "Removed: " + filename