当尝试安装 Python 3 的软件包（在 Ubuntu 中）时，使用pip3 install packageName (or sudo pip3 install packageName），我收到以下错误消息：
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/pip/_vendor/__init__.py", line 33, in vendored
__import__(vendored_name, globals(), locals(), level=0)
ImportError: No module named 'pip._vendor.pkg_resources'
我已经阅读了好几天，并尝试了以下方法但没有成功：
- 使用以下代码卸载并重新安装 pip3：
sudo apt-get remove python3-pip其次是sudo apt-get install python3-pip。在几篇文章中建议了这一点，这些文章说有时pip3无法正确安装 Ubuntu。然而，这并没有奏效。
- 其他帖子表明这是一个
ssl包问题，如果ssl包无法在 Python3 上加载，这就是问题所在。但是以下命令不会引发任何错误：python3 -c "import ssl".
- 其他一些帖子表明问题出在
requests包裹。然后我尝试了sudo apt-get remove python3-requests其次是sudo apt-get install python3-requests也无济于事。
您可能需要的其他信息：
-
pip3 --version给了我上面报告的相同错误。
-
dpkg -L python3-pip给我以下信息：
/.
/usr
/usr/lib
/usr/lib/python3
/usr/lib/python3/dist-packages
/usr/lib/python3/dist-packages/pip-8.1.1.egg-info
/usr/lib/python3/dist-packages/pip-8.1.1.egg-info/PKG-INFO
/usr/lib/python3/dist-packages/pip-8.1.1.egg-info/dependency_links.txt
/usr/lib/python3/dist-packages/pip-8.1.1.egg-info/not-zip-safe
/usr/lib/python3/dist-packages/pip-8.1.1.egg-info/requires.txt
/usr/lib/python3/dist-packages/pip-8.1.1.egg-info/entry_points.txt
/usr/lib/python3/dist-packages/pip-8.1.1.egg-info/top_level.txt
/usr/lib/python3/dist-packages/pip
/usr/lib/python3/dist-packages/pip/baseparser.py
/usr/lib/python3/dist-packages/pip/__main__.py
/usr/lib/python3/dist-packages/pip/req
/usr/lib/python3/dist-packages/pip/req/req_set.py
/usr/lib/python3/dist-packages/pip/req/req_install.py
/usr/lib/python3/dist-packages/pip/req/__init__.py
/usr/lib/python3/dist-packages/pip/req/req_file.py
/usr/lib/python3/dist-packages/pip/req/req_uninstall.py
/usr/lib/python3/dist-packages/pip/index.py
/usr/lib/python3/dist-packages/pip/status_codes.py
/usr/lib/python3/dist-packages/pip/utils
/usr/lib/python3/dist-packages/pip/utils/setuptools_build.py
/usr/lib/python3/dist-packages/pip/utils/appdirs.py
/usr/lib/python3/dist-packages/pip/utils/outdated.py
/usr/lib/python3/dist-packages/pip/utils/ui.py
/usr/lib/python3/dist-packages/pip/utils/logging.py
/usr/lib/python3/dist-packages/pip/utils/encoding.py
/usr/lib/python3/dist-packages/pip/utils/deprecation.py
/usr/lib/python3/dist-packages/pip/utils/__init__.py
/usr/lib/python3/dist-packages/pip/utils/filesystem.py
/usr/lib/python3/dist-packages/pip/utils/hashes.py
/usr/lib/python3/dist-packages/pip/utils/build.py
/usr/lib/python3/dist-packages/pip/compat
/usr/lib/python3/dist-packages/pip/compat/dictconfig.py
/usr/lib/python3/dist-packages/pip/compat/__init__.py
/usr/lib/python3/dist-packages/pip/compat/ordereddict.py
/usr/lib/python3/dist-packages/pip/models
/usr/lib/python3/dist-packages/pip/models/index.py
/usr/lib/python3/dist-packages/pip/models/__init__.py
/usr/lib/python3/dist-packages/pip/vcs
/usr/lib/python3/dist-packages/pip/vcs/bazaar.py
/usr/lib/python3/dist-packages/pip/vcs/subversion.py
/usr/lib/python3/dist-packages/pip/vcs/mercurial.py
/usr/lib/python3/dist-packages/pip/vcs/__init__.py
/usr/lib/python3/dist-packages/pip/vcs/git.py
/usr/lib/python3/dist-packages/pip/cmdoptions.py
/usr/lib/python3/dist-packages/pip/basecommand.py
/usr/lib/python3/dist-packages/pip/commands
/usr/lib/python3/dist-packages/pip/commands/completion.py
/usr/lib/python3/dist-packages/pip/commands/install.py
/usr/lib/python3/dist-packages/pip/commands/hash.py
/usr/lib/python3/dist-packages/pip/commands/uninstall.py
/usr/lib/python3/dist-packages/pip/commands/__init__.py
/usr/lib/python3/dist-packages/pip/commands/list.py
/usr/lib/python3/dist-packages/pip/commands/search.py
/usr/lib/python3/dist-packages/pip/commands/show.py
/usr/lib/python3/dist-packages/pip/commands/download.py
/usr/lib/python3/dist-packages/pip/commands/wheel.py
/usr/lib/python3/dist-packages/pip/commands/freeze.py
/usr/lib/python3/dist-packages/pip/commands/help.py
/usr/lib/python3/dist-packages/pip/_vendor
/usr/lib/python3/dist-packages/pip/_vendor/__init__.py
/usr/lib/python3/dist-packages/pip/operations
/usr/lib/python3/dist-packages/pip/operations/__init__.py
/usr/lib/python3/dist-packages/pip/operations/freeze.py
/usr/lib/python3/dist-packages/pip/__init__.py
/usr/lib/python3/dist-packages/pip/locations.py
/usr/lib/python3/dist-packages/pip/pep425tags.py
/usr/lib/python3/dist-packages/pip/exceptions.py
/usr/lib/python3/dist-packages/pip/download.py
/usr/lib/python3/dist-packages/pip/wheel.py
/usr/share
/usr/share/man
/usr/share/man/man1
/usr/share/man/man1/pip3.1.gz
/usr/share/doc
/usr/share/doc/python3-pip
/usr/share/doc/python3-pip/copyright
/usr/bin
/usr/bin/pip3
/usr/share/doc/python3-pip/changelog.Debian.gz
我怎样才能使pip3 work?
NOTE: pip对于Python2来说工作得很好。
=================================================
EDIT:
- 当试图
import setuptools在Python3中我得到以下错误：
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python3/dist-packages/setuptools/__init__.py", line 11, in <module>
from setuptools.extern.six.moves import filterfalse, map
File "/usr/lib/python3/dist-packages/setuptools/extern/__init__.py", line 1, in <module>
from pkg_resources.extern import VendorImporter
File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2927, in <module>
@_call_aside
File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2913, in _call_aside
f(*args, **kwargs)
File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2952, in _initialize_master_working_set
add_activation_listener(lambda dist: dist.activate())
File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 956, in subscribe
callback(dist)
File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2952, in <lambda>
add_activation_listener(lambda dist: dist.activate())
File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2515, in activate
declare_namespace(pkg)
File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2097, in declare_namespace
_handle_ns(packageName, path_item)
File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2047, in _handle_ns
_rebuild_mod_path(path, packageName, module)
File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2066, in _rebuild_mod_path
orig_path.sort(key=position_in_sys_path)
AttributeError: '_NamespacePath' object has no attribute 'sort'
-
当运行以下命令时sed -n '31,37p' < /usr/lib/python3/dist-packages/pip/_vendor/__init__.py在终端中，我得到以下信息：
try:
__import__(vendored_name, globals(), locals(), level=0)
except ImportError:
try:
__import__(modulename, globals(), locals(), level=0)
except ImportError:
=============================================
EDIT2:
My python3 --version is Python 3.5.2.
运行代码获得的已安装包列表ls /usr/lib/python3/dist-packages.
apport
apport_python_hook.py
apt
aptdaemon
apt_inst.cpython-35m-x86_64-linux-gnu.so
apt_pkg.cpython-35m-x86_64-linux-gnu.so
aptsources
AptUrl
apturl-0.5.2.egg-info
beautifulsoup4-4.4.1.egg-info
blinker
blinker-1.3.egg-info
Brlapi-0.6.4.egg-info
brlapi.cpython-35m-x86_64-linux-gnu.so
bs4
cairo
_cffi_backend.cpython-35m-x86_64-linux-gnu.so
chardet
chardet-2.3.0.egg-info
checkbox_support
checkbox_support-0.22.egg-info
CommandNotFound
command_not_found-0.3.egg-info
cryptography
cryptography-1.2.3.egg-info
cups.cpython-35m-x86_64-linux-gnu.so
cupsext.cpython-35m-x86_64-linux-gnu.so
curl
cycler-0.9.0.egg-info
cycler.py
dateutil
dbus
_dbus_bindings.cpython-35m-x86_64-linux-gnu.so
_dbus_glib_bindings.cpython-35m-x86_64-linux-gnu.so
deb822.py
debconf.py
debian
debian_bundle
decorator-4.0.6.egg-info
decorator.py
defer
defer-1.0.6.egg-info
DistUpgrade
easy_install.py
feedparser-5.1.3.egg-info
feedparser.py
feedparser_sgmllib3.py
gi
guacamole
guacamole-0.9.2.egg-info
hpmudext.cpython-35m-x86_64-linux-gnu.so
html5lib
html5lib-0.999.egg-info
httplib2
httplib2-0.9.1.egg-info
idna
idna-2.0.egg-info
janitor
jinja2
Jinja2-2.8.egg-info
jwt
LanguageSelector
language_selector-0.1.egg-info
language_support_pkgs.py
louis
louis-2.6.4.egg-info
lsb_release.py
lxml
lxml-3.5.0.egg-info
mako
Mako-1.0.3.egg-info
markupsafe
MarkupSafe-0.23.egg-info
matplotlib
matplotlib-1.5.1.egg-info
matplotlib-1.5.1-nspkg.pth
mpl_toolkits
networkx
networkx-1.11.egg-info
numexpr
numexpr-2.4.3.egg-info
numpy
numpy-1.11.0.egg-info
NvidiaDetector
oauthlib
oauthlib-1.0.3.egg-info
Onboard
onboard-1.2.0.egg-info
orca
padme
padme-1.1.1.egg-info
pandas
pandas-0.17.1.egg-info
pcardext.cpython-35m-x86_64-linux-gnu.so
pexpect
pexpect-4.0.1.egg-info
PIL
Pillow-3.1.2.egg-info
pip
pip-8.1.1.egg-info
pkg_resources
plotly
plotly-1.9.5.egg-info
problem_report.py
ptyprocess
ptyprocess-0.5.egg-info
pyasn1
pyasn1-0.1.9.egg-info
pyatspi
__pycache__
pycups-1.9.73.egg-info
pycurl-7.43.0.egg-info
pycurl.cpython-35m-x86_64-linux-gnu.so
pygobject-3.20.0.egg-info
pygtkcompat
PyJWT-1.3.0.egg-info
pylab.py
pyparsing-2.0.3.egg-info
pyparsing.py
python_apt-1.1.0.b1_ubuntu0.16.04.1.egg-info
python_dateutil-2.4.2.egg-info
python_debian-0.1.27.egg-info
python_systemd-231.egg-info
pytz
pytz-2014.10.egg-info
pyxdg-0.25.egg-info
PyYAML-3.11.egg-info
Quirks
reportlab
reportlab-3.3.0.egg-info
requests
requests-2.9.1.egg-info
scanext.cpython-35m-x86_64-linux-gnu.so
scipy
scipy-0.17.0.egg-info
sessioninstaller
sessioninstaller-0.0.0.egg-info
setuptools
setuptools-20.7.0.egg-info
six-1.10.0.egg-info
six.py
softwareproperties
speechd
speechd_config
systemd
system_service-0.3.egg-info
tables
tables-3.2.2.egg-info
UbuntuDrivers
ubuntu_drivers_common-0.0.0.egg-info
UbuntuSystemService
ufw
ufw-0.35.egg-info
unattended_upgrades-0.1.egg-info
unity_scope_calculator-0.1.egg-info
unity_scope_chromiumbookmarks-0.1.egg-info
unity_scope_colourlovers-0.1.egg-info
unity_scope_devhelp-0.1.egg-info
unity_scope_firefoxbookmarks-0.1.egg-info
unity_scope_gdrive-0.7.egg-info
unity_scope_manpages-0.1.egg-info
unity_scope_openclipart-0.1.egg-info
unity_scope_texdoc-0.1.egg-info
unity_scope_tomboy-0.1.egg-info
unity_scope_virtualbox-0.1.egg-info
unity_scope_yelp-0.1.egg-info
unity_scope_zotero-0.1.egg-info
unohelper.py
uno.py
UpdateManager
urllib3
urllib3-1.13.1.egg-info
usbcreator
usb_creator-0.3.0.egg-info
wheel
wheel-0.29.0.egg-info
xdg
xdiagnose
xdiagnose-3.8.4.1.egg-info
xkit
xkit-0.0.0.egg-info
xlsxwriter
XlsxWriter-0.7.3.egg-info
yaml
_yaml.cpython-35m-x86_64-linux-gnu.so
