travis.py 文件源码

def decrypt_file(file, key):
    """
    Decrypts the file ``file``.

    The encrypted file is assumed to end with the ``.enc`` extension. The
    decrypted file is saved to the same location without the ``.enc``
    extension.

    The permissions on the decrypted file are automatically set to 0o600.

    See also :func:`doctr.local.encrypt_file`.

    """
    if not file.endswith('.enc'):
        raise ValueError("%s does not end with .enc" % file)

    fer = Fernet(key)

    with open(file, 'rb') as f:
        decrypted_file = fer.decrypt(f.read())

    with open(file[:-4], 'wb') as f:
        f.write(decrypted_file)

    os.chmod(file[:-4], 0o600)