PIP nicht aktualisieren können Setuptools

Question

Ich versuche Setuptools auf CentOS 6 und laufen in dieses Problem zu aktualisieren:

$ sudo pip install setuptools --no-use-wheel --upgrade 
DEPRECATION: Python 2.6 is no longer supported by the Python core team, please upgrade your Python. A future version of pip will drop support for Python 2.6 
DEPRECATION: --no-use-wheel is deprecated and will be removed in the future. Please use --no-binary :all: instead. 
/usr/lib/python2.6/site-packages/pip-8.1.2-py2.6.egg/pip/_vendor/requests/packages/urllib3/util/ssl_.py:318: SNIMissingWarning: An HTTPS request has been made, but the SNI (Subject Name Indication) extension to TLS is not available on this platform. This may cause the server to present an incorrect TLS certificate, which can cause validation failures. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#snimissingwarning. 
    SNIMissingWarning 
/usr/lib/python2.6/site-packages/pip-8.1.2-py2.6.egg/pip/_vendor/requests/packages/urllib3/util/ssl_.py:122: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning. 
    InsecurePlatformWarning 
Collecting setuptools 
    Downloading setuptools-23.0.0.tar.gz (601kB) 
    100% |████████████████████████████████| 604kB 578kB/s 
Installing collected packages: setuptools 
    Found existing installation: setuptools 8.2.1 
    Uninstalling setuptools-8.2.1: 
     Successfully uninstalled setuptools-8.2.1 
    Running setup.py install for setuptools ... done 
Successfully installed setuptools 
Traceback (most recent call last): 
    File "/usr/bin/pip", line 9, in <module> 
    load_entry_point('pip==8.1.2', 'console_scripts', 'pip')() 
    File "/usr/lib/python2.6/site-packages/pip-8.1.2-py2.6.egg/pip/__init__.py", line 221, in main 
    return command.main(cmd_args) 
    File "/usr/lib/python2.6/site-packages/pip-8.1.2-py2.6.egg/pip/basecommand.py", line 252, in main 
    pip_version_check(session) 
    File "/usr/lib/python2.6/site-packages/pip-8.1.2-py2.6.egg/pip/utils/outdated.py", line 102, in pip_version_check 
    installed_version = get_installed_version("pip") 
    File "/usr/lib/python2.6/site-packages/pip-8.1.2-py2.6.egg/pip/utils/__init__.py", line 848, in get_installed_version 
    working_set = pkg_resources.WorkingSet() 
    File "/usr/lib/python2.6/site-packages/pip-8.1.2-py2.6.egg/pip/_vendor/pkg_resources/__init__.py", line 619, in __init__ 
    self.add_entry(entry) 
    File "/usr/lib/python2.6/site-packages/pip-8.1.2-py2.6.egg/pip/_vendor/pkg_resources/__init__.py", line 675, in add_entry 
    for dist in find_distributions(entry, True): 
    File "/usr/lib/python2.6/site-packages/pip-8.1.2-py2.6.egg/pip/_vendor/pkg_resources/__init__.py", line 1942, in find_eggs_in_zip 
    if metadata.has_metadata('PKG-INFO'): 
    File "/usr/lib/python2.6/site-packages/pip-8.1.2-py2.6.egg/pip/_vendor/pkg_resources/__init__.py", line 1463, in has_metadata 
    return self.egg_info and self._has(self._fn(self.egg_info, name)) 
    File "/usr/lib/python2.6/site-packages/pip-8.1.2-py2.6.egg/pip/_vendor/pkg_resources/__init__.py", line 1824, in _has 
    return zip_path in self.zipinfo or zip_path in self._index() 
    File "/usr/lib/python2.6/site-packages/pip-8.1.2-py2.6.egg/pip/_vendor/pkg_resources/__init__.py", line 1704, in zipinfo 
    return self._zip_manifests.load(self.loader.archive) 
    File "/usr/lib/python2.6/site-packages/pip-8.1.2-py2.6.egg/pip/_vendor/pkg_resources/__init__.py", line 1644, in load 
    mtime = os.stat(path).st_mtime 
OSError: [Errno 2] No such file or directory: '/usr/lib/python2.6/site-packages/setuptools-8.2.1-py2.6.egg' 

Irgendwelche Vorschläge? Ich habe versucht, manuell mit pip zu deinstallieren und neu zu installieren, und das hat nicht funktioniert. Nachdem setuptools entfernt wurde, beschwerte sich pip darüber, dass eine Datei fehlte und konnte die Installation nicht fortsetzen.

Answer 1

Die folgende Zeile in der Zurückverfolgungs
File "/usr/lib/python2.6/site-packages/pip-8.1.2-py2.6.egg/pip/utils/outdated.py", line 102, in pip_version_check

zeigt die Fehler, wenn Pip prüft Update erhöht wird. Als Workaround können Sie diese Überprüfung deaktivieren, indem Sie das Argument --disable-pip-version-check an pip übergeben.

Beachten Sie auch bitte die Linie
Successfully installed setuptools
in der Ausgabe. Unter Berücksichtigung von zwei Beobachtungen halte ich es für angebracht, den Fehler zu ignorieren.

Auch rate ich sudo mit pip - siehe Is it acceptable & safe to run pip install under sudo? Statt --user Option verwenden oder virtualenv.