code: def get_all_fix_names(fixer_pkg, remove_prefix=True):
      pkg = __import__(fixer_pkg, [], [], ["*"])
      fixer_dir = os.path.dirname(pkg.__file__)
      fix_names = []
      for name in sorted(os.listdir(fixer_dir)):
          if name.startswith("fix_") and name.endswith(".py"):
              if remove_prefix:
                  name = name[4:]
              fix_names.append(name[:-3])
      return fix_names