我启动时出现以下错误水银。
hg
Traceback (most recent call last):
File "/usr/lib64/python3/site-packages/mercurial/policy.py", line 65, in _importfrom
fakelocals[modname] = mod = getattr(pkg, modname)
File "/usr/lib64/python3/site-packages/mercurial/pycompat.py", line 308, in w
return f(object, sysstr(name), *args)
AttributeError: module 'mercurial.cext' has no attribute 'parsers'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/bin/hg", line 59, in <module>
dispatch.run()
File "/usr/lib64/python3.9/importlib/util.py", line 245, in __getattribute__
self.__spec__.loader.exec_module(self)
File "<frozen importlib._bootstrap_external>", line 850, in exec_module
File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
File "/usr/lib64/python3/site-packages/mercurial/dispatch.py", line 20, in <module>
from .i18n import _
File "/usr/lib64/python3.9/importlib/util.py", line 245, in __getattribute__
self.__spec__.loader.exec_module(self)
File "/usr/lib64/python3/site-packages/mercurial/i18n.py", line 122, in <module>
if _plain():
File "/usr/lib64/python3/site-packages/mercurial/i18n.py", line 114, in _plain
b'HGPLAIN' not in encoding.environ
File "/usr/lib64/python3.9/importlib/util.py", line 245, in __getattribute__
self.__spec__.loader.exec_module(self)
File "/usr/lib64/python3/site-packages/mercurial/encoding.py", line 40, in <module>
charencode = policy.importmod('charencode')
File "/usr/lib64/python3/site-packages/mercurial/policy.py", line 112, in importmod
mod = _importfrom(pn, mn)
File "/usr/lib64/python3/site-packages/mercurial/policy.py", line 67, in _importfrom
raise ImportError('cannot import name %s' % modname)
ImportError: cannot import name parsers
重要部分：
ImportError: cannot import name parsers
完整代码政策.py
# policy.py - module policy logic for Mercurial.
#
# Copyright 2015 Gregory Szorc <[email protected]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
import os
import sys
from .pycompat import getattr
# Rules for how modules can be loaded. Values are:
#
# c - require C extensions
# rust+c - require Rust and C extensions
# rust+c-allow - allow Rust and C extensions with fallback to pure Python
# for each
# allow - allow pure Python implementation when C loading fails
# cffi - required cffi versions (implemented within pure module)
# cffi-allow - allow pure Python implementation if cffi version is missing
# py - only load pure Python modules
#
# By default, fall back to the pure modules so the in-place build can
# run without recompiling the C extensions. This will be overridden by
# __modulepolicy__ generated by setup.py.
policy = b'allow'
_packageprefs = {
# policy: (versioned package, pure package)
b'c': ('cext', None),
b'allow': ('cext', 'pure'),
b'cffi': ('cffi', None),
b'cffi-allow': ('cffi', 'pure'),
b'py': (None, 'pure'),
# For now, rust policies impact importrust only
b'rust+c': ('cext', None),
b'rust+c-allow': ('cext', 'pure'),
}
try:
from . import __modulepolicy__
policy = __modulepolicy__.modulepolicy
except ImportError:
pass
# PyPy doesn't load C extensions.
#
# The canonical way to do this is to test platform.python_implementation().
# But we don't import platform and don't bloat for it here.
if '__pypy__' in sys.builtin_module_names:
policy = b'cffi'
# Environment variable can always force settings.
if 'HGMODULEPOLICY' in os.environ:
policy = os.environ['HGMODULEPOLICY'].encode('utf-8')
def _importfrom(pkgname, modname):
# from .<pkgname> import <modname> (where . is looked through this module)
fakelocals = {}
pkg = __import__(pkgname, globals(), fakelocals, [modname], level=1)
try:
fakelocals[modname] = mod = getattr(pkg, modname)
except AttributeError:
raise ImportError('cannot import name %s' % modname)
# force import; fakelocals[modname] may be replaced with the real module
getattr(mod, '__doc__', None)
return fakelocals[modname]
# keep in sync with "version" in C modules
_cextversions = {
('cext', 'base85'): 1,
('cext', 'bdiff'): 3,
('cext', 'mpatch'): 1,
('cext', 'osutil'): 4,
('cext', 'parsers'): 20,
}
# map import request to other package or module
_modredirects = {
('cext', 'charencode'): ('cext', 'parsers'),
('cffi', 'base85'): ('pure', 'base85'),
('cffi', 'charencode'): ('pure', 'charencode'),
('cffi', 'parsers'): ('pure', 'parsers'),
}
def _checkmod(pkgname, modname, mod):
expected = _cextversions.get((pkgname, modname))
actual = getattr(mod, 'version', None)
if actual != expected:
raise ImportError(
'cannot import module %s.%s '
'(expected version: %d, actual: %r)'
% (pkgname, modname, expected, actual)
)
def importmod(modname):
"""Import module according to policy and check API version"""
try:
verpkg, purepkg = _packageprefs[policy]
except KeyError:
raise ImportError('invalid HGMODULEPOLICY %r' % policy)
assert verpkg or purepkg
if verpkg:
pn, mn = _modredirects.get((verpkg, modname), (verpkg, modname))
try:
mod = _importfrom(pn, mn)
if pn == verpkg:
_checkmod(pn, mn, mod)
return mod
except ImportError:
if not purepkg:
raise
pn, mn = _modredirects.get((purepkg, modname), (purepkg, modname))
return _importfrom(pn, mn)
def _isrustpermissive():
"""Assuming the policy is a Rust one, tell if it's permissive."""
return policy.endswith(b'-allow')
def importrust(modname, member=None, default=None):
"""Import Rust module according to policy and availability.
If policy isn't a Rust one, this returns `default`.
If either the module or its member is not available, this returns `default`
if policy is permissive and raises `ImportError` if not.
"""
if not policy.startswith(b'rust'):
return default
try:
mod = _importfrom('rustext', modname)
except ImportError:
if _isrustpermissive():
return default
raise
if member is None:
return mod
try:
return getattr(mod, member)
except AttributeError:
if _isrustpermissive():
return default
raise ImportError("Cannot import name %s" % member)
大小为的文件夹和文件列表 ./usr/lib64/python3.9/site-packages/mercurial
./usr/lib64/python3.9/site-packages/mercurial:
total 5,4M
-rw-r--r-- 1 root root 13K ago 30 2021 ancestor.py
-rw-r--r-- 1 root root 12K ago 30 2021 archival.py
-rw-r--r-- 1 root root 33K ago 30 2021 bookmarks.py
-rw-r--r-- 1 root root 30K ago 30 2021 branchmap.py
-rw-r--r-- 1 root root 87K ago 30 2021 bundle2.py
-rw-r--r-- 1 root root 14K ago 30 2021 bundlecaches.py
-rw-r--r-- 1 root root 24K ago 30 2021 bundlerepo.py
-rw-r--r-- 1 root root 827 ago 30 2021 cacheutil.py
drwxr-xr-x 3 root root 4,0K ago 26 04:48 cext
drwxr-xr-x 3 root root 4,0K ago 26 04:48 cffi
-rw-r--r-- 1 root root 66K ago 30 2021 changegroup.py
-rw-r--r-- 1 root root 20K ago 30 2021 changelog.py
-rw-r--r-- 1 root root 26K ago 30 2021 chgserver.py
-rw-r--r-- 1 root root 130K ago 30 2021 cmdutil.py
-rw-r--r-- 1 root root 19K ago 30 2021 color.py
-rw-r--r-- 1 root root 25K ago 30 2021 commandserver.py
-rw-r--r-- 1 root root 259K ago 30 2021 commands.py
-rw-r--r-- 1 root root 17K ago 30 2021 commit.py
-rw-r--r-- 1 root root 47K ago 30 2021 configitems.py
-rw-r--r-- 1 root root 8,6K ago 30 2021 config.py
-rw-r--r-- 1 root root 100K ago 30 2021 context.py
-rw-r--r-- 1 root root 46K ago 30 2021 copies.py
-rw-r--r-- 1 root root 71K ago 30 2021 crecord.py
-rw-r--r-- 1 root root 40K ago 30 2021 dagop.py
-rw-r--r-- 1 root root 16K ago 30 2021 dagparser.py
-rw-r--r-- 1 root root 157K ago 30 2021 debugcommands.py
drwxr-xr-x 3 root root 4,0K ago 26 04:48 defaultrc
-rw-r--r-- 1 root root 17K ago 30 2021 destutil.py
-rw-r--r-- 1 root root 2,4K ago 30 2021 diffhelper.py
-rw-r--r-- 1 root root 4,6K ago 30 2021 diffutil.py
-rw-r--r-- 1 root root 3,1K ago 30 2021 dirstateguard.py
-rw-r--r-- 1 root root 33K ago 30 2021 dirstatemap.py
-rw-r--r-- 1 root root 62K ago 30 2021 dirstate.py
drwxr-xr-x 3 root root 4,0K ago 26 04:48 dirstateutils
-rw-r--r-- 1 root root 23K ago 30 2021 discovery.py
-rw-r--r-- 1 root root 47K ago 30 2021 dispatch.py
-rw-r--r-- 1 root root 2,2K ago 30 2021 dummycert.pem
-rw-r--r-- 1 root root 23K ago 30 2021 encoding.py
-rw-r--r-- 1 root root 18K ago 30 2021 error.py
-rw-r--r-- 1 root root 95K ago 30 2021 exchange.py
-rw-r--r-- 1 root root 25K ago 30 2021 exchangev2.py
-rw-r--r-- 1 root root 30K ago 30 2021 extensions.py
-rw-r--r-- 1 root root 12K ago 30 2021 exthelper.py
-rw-r--r-- 1 root root 12K ago 30 2021 fancyopts.py
-rw-r--r-- 1 root root 8,7K ago 30 2021 filelog.py
-rw-r--r-- 1 root root 43K ago 30 2021 filemerge.py
-rw-r--r-- 1 root root 11K ago 30 2021 filesetlang.py
-rw-r--r-- 1 root root 19K ago 30 2021 fileset.py
-rw-r--r-- 1 root root 27K ago 30 2021 formatter.py
-rw-r--r-- 1 root root 17K ago 30 2021 graphmod.py
-rw-r--r-- 1 root root 7,3K ago 30 2021 grep.py
-rw-r--r-- 1 root root 11K ago 30 2021 hbisect.py
-rw-r--r-- 1 root root 37K ago 30 2021 help.py
drwxr-xr-x 4 root root 4,0K ago 26 04:48 helptext
-rw-r--r-- 1 root root 52K ago 30 2021 hg.py
drwxr-xr-x 3 root root 4,0K ago 26 04:48 hgweb
-rw-r--r-- 1 root root 12K ago 30 2021 hook.py
-rw-r--r-- 1 root root 4,3K ago 30 2021 httpconnection.py
-rw-r--r-- 1 root root 35K ago 30 2021 httppeer.py
-rw-r--r-- 1 root root 4,1K sep 24 2021 i18n.py
-rw-r--r-- 1 root root 416 ago 30 2021 __init__.py
drwxr-xr-x 3 root root 4,0K ago 26 04:48 interfaces
-rw-r--r-- 1 root root 28K ago 30 2021 keepalive.py
-rw-r--r-- 1 root root 15K ago 30 2021 linelog.py
drwxr-xr-x 2 root root 4,0K may 7 18:22 locale
-rw-r--r-- 1 root root 138K ago 30 2021 localrepo.py
-rw-r--r-- 1 root root 12K ago 30 2021 lock.py
-rw-r--r-- 1 root root 42K ago 30 2021 logcmdutil.py
-rw-r--r-- 1 root root 5,0K ago 30 2021 logexchange.py
-rw-r--r-- 1 root root 4,0K ago 30 2021 loggingutil.py
-rw-r--r-- 1 root root 2,8K ago 30 2021 lsprofcalltree.py
-rw-r--r-- 1 root root 4,3K ago 30 2021 lsprof.py
-rw-r--r-- 1 root root 18K ago 30 2021 mail.py
-rw-r--r-- 1 root root 76K ago 30 2021 manifest.py
-rw-r--r-- 1 root root 53K ago 30 2021 match.py
-rw-r--r-- 1 root root 18K ago 30 2021 mdiff.py
-rw-r--r-- 1 root root 86K ago 30 2021 merge.py
-rw-r--r-- 1 root root 30K ago 30 2021 mergestate.py
-rw-r--r-- 1 root root 502 ago 30 2021 mergeutil.py
-rw-r--r-- 1 root root 33K ago 30 2021 metadata.py
-rw-r--r-- 1 root root 3,6K ago 30 2021 minifileset.py
-rw-r--r-- 1 root root 30K ago 30 2021 minirst.py
-rw-r--r-- 1 root root 61 sep 24 2021 __modulepolicy__.py
-rw-r--r-- 1 root root 8,2K ago 30 2021 namespaces.py
-rw-r--r-- 1 root root 12K ago 30 2021 narrowspec.py
-rw-r--r-- 1 root root 2,1K ago 30 2021 node.py
-rw-r--r-- 1 root root 37K ago 30 2021 obsolete.py
-rw-r--r-- 1 root root 36K ago 30 2021 obsutil.py
-rw-r--r-- 1 root root 26K ago 30 2021 parser.py
-rw-r--r-- 1 root root 102K ago 30 2021 patch.py
-rw-r--r-- 1 root root 13K ago 30 2021 pathutil.py
-rw-r--r-- 1 root root 33K ago 30 2021 phases.py
-rw-r--r-- 1 root root 4,8K ago 30 2021 policy.py
-rw-r--r-- 1 root root 24K ago 30 2021 posix.py
-rw-r--r-- 1 root root 8,7K ago 30 2021 profiling.py
-rw-r--r-- 1 root root 11K ago 30 2021 progress.py
drwxr-xr-x 3 root root 4,0K ago 26 04:48 pure
-rw-r--r-- 1 root root 1,7K ago 30 2021 pushkey.py
-rw-r--r-- 1 root root 6,1K ago 30 2021 pvec.py
drwxr-xr-x 2 root root 12K ago 26 04:48 __pycache__
-rw-r--r-- 1 root root 17K ago 30 2021 pycompat.py
-rw-r--r-- 1 root root 3,6K ago 30 2021 rcutil.py
-rw-r--r-- 1 root root 18K ago 30 2021 registrar.py
-rw-r--r-- 1 root root 18K ago 30 2021 repair.py
-rw-r--r-- 1 root root 4,5K ago 30 2021 repocache.py
-rw-r--r-- 1 root root 17K ago 30 2021 repoview.py
-rw-r--r-- 1 root root 3,4K ago 30 2021 requirements.py
-rw-r--r-- 1 root root 118K ago 30 2021 revlog.py
drwxr-xr-x 3 root root 4,0K ago 26 04:48 revlogutils
-rw-r--r-- 1 root root 29K ago 30 2021 revsetlang.py
-rw-r--r-- 1 root root 88K ago 30 2021 revset.py
-rw-r--r-- 1 root root 8,3K ago 30 2021 rewriteutil.py
-rw-r--r-- 1 root root 2,6K ago 30 2021 scmposix.py
-rw-r--r-- 1 root root 76K ago 30 2021 scmutil.py
-rw-r--r-- 1 root root 3,4K ago 30 2021 scmwindows.py
-rw-r--r-- 1 root root 7,1K ago 30 2021 server.py
-rw-r--r-- 1 root root 19K ago 30 2021 setdiscovery.py
-rw-r--r-- 1 root root 38K ago 30 2021 shelve.py
-rw-r--r-- 1 root root 4,0K ago 30 2021 similar.py
-rw-r--r-- 1 root root 19K ago 30 2021 simplemerge.py
-rw-r--r-- 1 root root 34K ago 30 2021 smartset.py
-rw-r--r-- 1 root root 26K ago 30 2021 sparse.py
-rw-r--r-- 1 root root 25K ago 30 2021 sshpeer.py
-rw-r--r-- 1 root root 32K ago 30 2021 sslutil.py
-rw-r--r-- 1 root root 762 ago 30 2021 stack.py
-rw-r--r-- 1 root root 12K ago 30 2021 state.py
-rw-r--r-- 1 root root 7,7K ago 30 2021 statichttprepo.py
-rw-r--r-- 1 root root 33K ago 30 2021 statprof.py
-rw-r--r-- 1 root root 25K ago 30 2021 store.py
-rw-r--r-- 1 root root 31K ago 30 2021 streamclone.py
-rw-r--r-- 1 root root 8,7K ago 30 2021 strip.py
-rw-r--r-- 1 root root 71K ago 30 2021 subrepo.py
-rw-r--r-- 1 root root 18K ago 30 2021 subrepoutil.py
-rw-r--r-- 1 root root 12K ago 30 2021 tagmerge.py
-rw-r--r-- 1 root root 30K ago 30 2021 tags.py
-rw-r--r-- 1 root root 16K ago 30 2021 templatefilters.py
-rw-r--r-- 1 root root 31K ago 30 2021 templatefuncs.py
-rw-r--r-- 1 root root 34K ago 30 2021 templatekw.py
-rw-r--r-- 1 root root 38K ago 30 2021 templater.py
drwxr-xr-x 13 root root 4,0K ago 26 04:48 templates
-rw-r--r-- 1 root root 36K ago 30 2021 templateutil.py
drwxr-xr-x 3 root root 4,0K ago 26 04:48 testing
drwxr-xr-x 5 root root 4,0K ago 26 04:48 thirdparty
-rw-r--r-- 1 root root 26K ago 30 2021 transaction.py
-rw-r--r-- 1 root root 6,0K ago 30 2021 treediscovery.py
-rw-r--r-- 1 root root 1,1K ago 30 2021 txnutil.py
-rw-r--r-- 1 root root 81K ago 30 2021 ui.py
-rw-r--r-- 1 root root 9,7K ago 30 2021 unionrepo.py
-rw-r--r-- 1 root root 13K ago 30 2021 upgrade.py
drwxr-xr-x 3 root root 4,0K ago 26 04:48 upgrade_utils
-rw-r--r-- 1 root root 6,0K ago 30 2021 urllibcompat.py
-rw-r--r-- 1 root root 25K ago 30 2021 url.py
-rw-r--r-- 1 root root 97K ago 30 2021 util.py
drwxr-xr-x 3 root root 4,0K ago 26 04:48 utils
-rw-r--r-- 1 root root 22K ago 30 2021 verify.py
-rw-r--r-- 1 root root 60 ago 30 2021 __version__.py
-rw-r--r-- 1 root root 25K ago 30 2021 vfs.py
-rw-r--r-- 1 root root 23K ago 30 2021 win32.py
-rw-r--r-- 1 root root 22K ago 30 2021 windows.py
-rw-r--r-- 1 root root 65K ago 30 2021 wireprotoframing.py
-rw-r--r-- 1 root root 28K ago 30 2021 wireprotoserver.py
-rw-r--r-- 1 root root 14K ago 30 2021 wireprototypes.py
-rw-r--r-- 1 root root 23K ago 30 2021 wireprotov1peer.py
-rw-r--r-- 1 root root 27K ago 30 2021 wireprotov1server.py
-rw-r--r-- 1 root root 19K ago 30 2021 wireprotov2peer.py
-rw-r--r-- 1 root root 49K ago 30 2021 wireprotov2server.py
-rw-r--r-- 1 root root 16K ago 30 2021 worker.py
-rwxr-xr-x 1 root root 669K may 7 18:22 zstd.cpython-36m-x86_64-linux-gnu.so
./usr/lib64/python3.9/site-packages/mercurial/cext:
total 176K
-rwxr-xr-x 1 root root 11K may 7 18:22 base85.cpython-36m-x86_64-linux-gnu.so
-rwxr-xr-x 1 root root 31K may 7 18:22 bdiff.cpython-36m-x86_64-linux-gnu.so
-rw-r--r-- 1 root root 0 ago 30 2021 __init__.py
-rwxr-xr-x 1 root root 15K may 7 18:22 mpatch.cpython-36m-x86_64-linux-gnu.so
-rwxr-xr-x 1 root root 20K may 7 18:22 osutil.cpython-36m-x86_64-linux-gnu.so
-rwxr-xr-x 1 root root 89K may 7 18:22 parsers.cpython-36m-x86_64-linux-gnu.so
drwxr-xr-x 2 root root 4,0K ago 26 04:48 __pycache__
./usr/lib64/python3.9/site-packages/mercurial/cext/__pycache__:
total 4,0K
-rw-r--r-- 1 root root 143 may 7 18:22 __init__.cpython-36.pyc
我该如何解决？
答案1
导入模块的完整路径.so：
import importlib.util
name = "parsers"
url = "/usr/lib64/python3.9/site-packages/mercurial/cext/parsers.cpython-36m-x86_64-linux-gnu.so"
parsers = importlib.util.spec_from_file_location(name, url)
替代或补充、改变编码.py:41
charencode = policy.importmod('charencode')
替换为：
charencode = charencodepure