diff options
Diffstat (limited to 'Lib/_pyio.py')
| -rw-r--r-- | Lib/_pyio.py | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Lib/_pyio.py b/Lib/_pyio.py index 50ad9ff..33d8a3f 100644 --- a/Lib/_pyio.py +++ b/Lib/_pyio.py @@ -181,8 +181,8 @@ def open(file, mode="r", buffering=-1, encoding=None, errors=None, text = "t" in modes binary = "b" in modes if "U" in modes: - if creating or writing or appending: - raise ValueError("can't use U and writing mode at once") + if creating or writing or appending or updating: + raise ValueError("mode U cannot be combined with 'x', 'w', 'a', or '+'") import warnings warnings.warn("'U' mode is deprecated", DeprecationWarning, 2) |