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Diffstat (limited to 'Doc/whatsnew/3.4.rst')
| -rw-r--r-- | Doc/whatsnew/3.4.rst | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst index aedd6e2..b0ea9ac 100644 --- a/Doc/whatsnew/3.4.rst +++ b/Doc/whatsnew/3.4.rst @@ -2275,6 +2275,14 @@ Changes in the Python API to determine if a module is a package or not is to use``hasattr(module, '__path__')`` (:issue:`18065`). +* Frozen modules no longer define a ``__file__`` attribute. It's semantically + incorrect for frozen modules to set the attribute as they are not loaded from + any explicit location. If you must know that a module comes from frozen code + then you can see if the module's ``__spec__.location`` is set to ``'frozen'``, + check if the loader is a subclass of + :class:`importlib.machinery.FrozenImporter`, + or if Python 2 compatibility is necessary you can use :func:`imp.is_frozen`. + * :func:`py_compile.compile` now raises :exc:`FileExistsError` if the file path it would write to is a symlink or a non-regular file. This is to act as a warning that import will overwrite those files with a regular file regardless |