mirror of https://github.com/python/cpython
gh-91181: drop support for bytes on sys.path (GH-31934)
Support for bytes broke sometime between Python 3.2 and 3.6 and has been broken ever since. Trying to bring back supports is surprisingly difficult in the face of -b and checking for keys in sys.path_importer_cache. Since the support was broken for so long, trying to overcome the difficulty of bringing back the support has been deemed not worth it. Co-authored-by: Eryk Sun <eryksun@gmail.com> Co-authored-by: Brett Cannon <brett@python.org>
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@ -1158,7 +1158,7 @@ always available.
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line option or the :envvar:`PYTHONSAFEPATH` environment variable?
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A program is free to modify this list for its own purposes. Only strings
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and bytes should be added to :data:`sys.path`; all other data types are
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should be added to :data:`sys.path`; all other data types are
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ignored during import.
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@ -800,10 +800,8 @@ environment variable and various other installation- and
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implementation-specific defaults. Entries in :data:`sys.path` can name
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directories on the file system, zip files, and potentially other "locations"
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(see the :mod:`site` module) that should be searched for modules, such as
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URLs, or database queries. Only strings and bytes should be present on
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:data:`sys.path`; all other data types are ignored. The encoding of bytes
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entries is determined by the individual :term:`path entry finders <path entry
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finder>`.
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URLs, or database queries. Only strings should be present on
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:data:`sys.path`; all other data types are ignored.
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The :term:`path based finder` is a :term:`meta path finder`, so the import
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machinery begins the :term:`import path` search by calling the path
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@ -1475,7 +1475,7 @@ class PathFinder:
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# the list of paths that will become its __path__
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namespace_path = []
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for entry in path:
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if not isinstance(entry, (str, bytes)):
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if not isinstance(entry, str):
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continue
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finder = cls._path_importer_cache(entry)
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if finder is not None:
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@ -742,7 +742,8 @@ class UncompressedZipImportTestCase(ImportHooksBaseTestCase):
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z.writestr(zinfo, test_src)
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zipimport.zipimporter(filename)
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zipimport.zipimporter(os.fsencode(filename))
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with self.assertRaises(TypeError):
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zipimport.zipimporter(os.fsencode(filename))
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with self.assertRaises(TypeError):
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zipimport.zipimporter(bytearray(os.fsencode(filename)))
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with self.assertRaises(TypeError):
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@ -63,8 +63,7 @@ class zipimporter(_bootstrap_external._LoaderBasics):
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# if found, or else read it from the archive.
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def __init__(self, path):
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if not isinstance(path, str):
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import os
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path = os.fsdecode(path)
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raise TypeError(f"expected str, not {type(path)!r}")
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if not path:
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raise ZipImportError('archive path is empty', path=path)
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if alt_path_sep:
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@ -0,0 +1 @@
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Drop support for :class:`bytes` on :attr:`sys.path`.
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