code: def save_diffs(diffs, filename):
      diff = "\n\n".join(diffs)
      with open(filename, "w") as diff_file:
          diff_file.write(diff)
  
imports: from __future__ import absolute_import, print_function, division
  import difflib
  import operator
  import os
  import string
  from subprocess import Popen, PIPE
  import sys
  import tabnanny
  import tokenize
  import reindent
  from six import StringIO
label_desc: Use image node_id 13 for calling a global function with example usage: save_diffs(diffs, filename) without return types