comparison mercurial/extensions.py @ 50757:19108906abaf stable

extensions: imp module is removed in Python 3.12 - use importlib to load files

imp has been deprecated for a long time, and has finally been removed in Python
3.12 .

imp was only used for loading extensions that has been specified with direct
.py path or path to a package directory. The same use cases can be achieved
quite simple with importlib, , possiby with small changes in corner cases with
undefined behaviour, such as extensions without .py source.

There might also be corner cases and undefined behaviour around use of
sys.modules and reloading.

50756:847f703a4d13

import ast
import collections
import functools
import imp
import inspect
import os

from .i18n import (
    _,
    gettext,
)

    path = util.normpath(util.expandpath(path))
    module_name = pycompat.fsdecode(module_name)
    path = pycompat.fsdecode(path)
    if os.path.isdir(path):
        # module/__init__.py style
        d, f = os.path.split(path)
        fd, fpath, desc = imp.find_module(f, [d])
        # When https://github.com/python/typeshed/issues/3466 is fixed
        # and in a pytype release we can drop this disable.
        return imp.load_module(
            module_name, fd, fpath, desc  # pytype: disable=wrong-arg-types
        )
    else:
        try:
            return imp.load_source(module_name, path)
        except IOError as exc:
            if not exc.filename:
                exc.filename = path  # python does not fill this
            raise


def _importh(name):
    """import and return the <name> module"""
    mod = __import__(pycompat.sysstr(name))

50757:19108906abaf

import ast
import collections
import functools
import importlib
import inspect
import os
import sys

from .i18n import (
    _,
    gettext,
)

    path = util.normpath(util.expandpath(path))
    module_name = pycompat.fsdecode(module_name)
    path = pycompat.fsdecode(path)
    if os.path.isdir(path):
        # module/__init__.py style
        init_py_path = os.path.join(path, '__init__.py')
        if not os.path.exists(init_py_path):
            raise ImportError("No module named '%s'" % os.path.basename(path))
        path = init_py_path

    loader = importlib.machinery.SourceFileLoader(module_name, path)
    spec = importlib.util.spec_from_file_location(module_name, loader=loader)
    assert spec is not None  # help Pytype
    module = importlib.util.module_from_spec(spec)
    sys.modules[module_name] = module
    spec.loader.exec_module(module)
    return module


def _importh(name):
    """import and return the <name> module"""
    mod = __import__(pycompat.sysstr(name))