无法在 Python 2.7.5 上升级 Pip

Question

I'm trying to upgrade pip to the latest version on Python 2.7.5 on Centos 7.

# python -m pip install --upgrade pip
Collecting pip
  Using cached https://files.pythonhosted.org/packages/9e/24/bc928987f35dd0167f21b13a1777c21b9c5917c9894cff93f1c1a6cb8f3b/pip-21.0.tar.gz
    Complete output from command python setup.py egg_info:
    /usr/lib64/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'project_urls'
      warnings.warn(msg)
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-eMN0xl/pip/setup.py", line 85, in <module>
        python_requires='>=3.6',
      File "/usr/lib64/python2.7/distutils/core.py", line 112, in setup
        _setup_distribution = dist = klass(attrs)
      File "/usr/lib/python2.7/site-packages/setuptools/dist.py", line 269, in __init__
        _Distribution.__init__(self,attrs)
      File "/usr/lib64/python2.7/distutils/dist.py", line 287, in __init__
        self.finalize_options()
      File "/usr/lib/python2.7/site-packages/setuptools/dist.py", line 302, in finalize_options
        ep.load()(self, ep.name, value)
      File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2302, in load
        return self.resolve()
      File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2312, in resolve
        raise ImportError(str(exc))
    ImportError: 'module' object has no attribute 'check_specifier'
    
    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-eMN0xl/pip/

I tried upgrading the setup tools as well. However that's failing to

# python -m pip install --upgrade setuptools

Collecting setuptools
 Using cached https://files.pythonhosted.org/packages/84/48/5c99d8770fd0a9eb0f82654c3294aad6d0ba9f8600638c2e2ad74f2c5d52/setuptools-52.0.0.tar.gz
   Complete output from command python setup.py egg_info:
   Traceback (most recent call last):
     File "<string>", line 1, in <module>
     File "setuptools/__init__.py", line 16, in <module>
       import setuptools.version
     File "setuptools/version.py", line 1, in <module>
       import pkg_resources
     File "pkg_resources/__init__.py", line 1367
       raise SyntaxError(e) from e
                               ^
   SyntaxError: invalid syntax
   
   ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-ohx4SA/setuptools/

This was working will as of last Friday. However it seems to be broken from the beginning of this week.

Could you please advise on this?

Answer 1

Looks like they have removed support for Python 2.7 with the latest version of Pip.

https://lwn.net/Articles/843945/

If I pin the pip version to 20.3.4, it works fine.

Answer 2

I have upgraded my pip to 20.3.4 version using this command. If you decited to stay on Python2.7 so you can upgrade your pip till 20.3.4

sudo python2.7 -m pip install --upgrade pip==20.3.4

Answer 3

use wget

wget https://bootstrap.pypa.io/get-pip.py
sudo python get-pip.py

Answer 4

I on CentOS7.9 and have both python 2.7.5 and 3.6.8 and alternatives set as 3.6.8 is the default python binary.

Was able to upgrade pip from 8.1 to 20.3.4 as Volkan's post. Thanks!

But I still cannot run pip3 or install modules to python3: /usr/bin/pip3 install requests Traceback (most recent call last): File "/usr/bin/pip3", line 16, in sys.exit(main()) File "/usr/local/lib/python3.6/site-packages/pip-22.3.1-py3.6.egg/pip/ init .py", line 11, in main from pip._internal.utils.entrypoints import _wrapper File "/usr/local/lib/python3.6/site-packages/pip-22.3.1-py3.6.egg/pip/_internal/utils/entrypoints.py", line 7, in from pip._internal.cli.main import main File "/usr/local/lib/python3.6/site-packages/pip-22.3.1-py3.6.egg/pip/_internal/cli/main.py", line 9, in from pip._internal.cli.autocompletion import autocomplete File "/usr/local/lib/python3.6/site-packages/pip-22.3.1-py3.6.egg/pip/_internal/cli/autocompletion.py", line 10, in from pip._internal.cli.main_parser import create_main_parser File "/usr/local/lib/python3.6/site-packages/pip-22.3.1-py3.6.egg/pip/_internal/cli/main_parser.py", line 9, in from pip._i nternal.build_env import get_runnable_pip File "/usr/local/lib/python3.6/site-packages/pip-22.3.1-py3.6.egg/pip/_internal/build_env.py", line 20, in from pip._internal.cli.spinners import open_spinner File "/usr/local/lib/python3.6/site-packages/pip-22.3.1-py3.6.egg/pip/_internal/cli/spinners.py", line 9, in from pip._internal.utils.logging import get_indentation File "/usr/local/lib/python3.6/site-packages/pip-22.3.1-py3.6.egg/pip/_internal/utils/logging.py", line 8, in from dataclasses import dataclass ModuleNotFoundError: No module named 'dataclasses'