test_util.py 文件源码

def diff(str1, str2):
  """Determine if two strings differ, emit differences to stdout."""
  result = list(difflib.Differ().compare(
      str1.splitlines(True), str2.splitlines(True)))

  same = True
  for line in result:
    if line[0] in ('-', '+'):
      same = False
      sys.stdout.write(line)

  return same