refactor.py 文件源码

def refactor_dir(self, dir_name, write=False, doctests_only=False):
        """Descends down a directory and refactor every Python file found.

        Python files are assumed to have a .py extension.

        Files and subdirectories starting with '.' are skipped.
        """
        py_ext = os.extsep + "py"
        for dirpath, dirnames, filenames in os.walk(dir_name):
            self.log_debug("Descending into %s", dirpath)
            dirnames.sort()
            filenames.sort()
            for name in filenames:
                if (not name.startswith(".") and
                    os.path.splitext(name)[1] == py_ext):
                    fullname = os.path.join(dirpath, name)
                    self.refactor_file(fullname, write, doctests_only)
            # Modify dirnames in-place to remove subdirs with leading dots
            dirnames[:] = [dn for dn in dirnames if not dn.startswith(".")]