import os import io import contextlib import tempfile import shutil import errno import zipfile @contextlib.contextmanager def tempdir(): """Create a temporary directory in a context manager.""" td = tempfile.mkdtemp() try: yield td finally: shutil.rmtree(td) def mkdir_p(*args, **kwargs): """Like `mkdir`, but does not raise an exception if the directory already exists. """ try: return os.mkdir(*args, **kwargs) except OSError as exc: if exc.errno != errno.EEXIST: raise def dir_to_zipfile(root): """Construct an in-memory zip file for a directory.""" buffer = io.BytesIO() zip_file = zipfile.ZipFile(buffer, 'w') for root, dirs, files in os.walk(root): for path in dirs: fs_path = os.path.join(root, path) rel_path = os.path.relpath(fs_path, root) zip_file.writestr(rel_path + '/', '') for path in files: fs_path = os.path.join(root, path) rel_path = os.path.relpath(fs_path, root) zip_file.write(fs_path, rel_path) return zip_file