无法安装pip install sphinxcontribopenapi“默认为用户安装，因为普通sitepackages不可写”

Question

我已经安装了python 2.7.5，并且成功地安装了这些模块

• 管道安装狮身人面像==1.6.1
• pip安装sphinxcontrib httpdomain
• pip安装sphinxcontrib.inlinesyntaxhighlight

但pip安装sphinxcontrib openapi时会出现如下所示的错误。我已经在网上阅读了一段时间这个问题的可能解决方案，但是我真的无法解决这个问题

-bash-4.2$ pip install sphinxcontrib-openapi
DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality.
Defaulting to user installation because normal site-packages is not writeable
Collecting sphinxcontrib-openapi
  Using cached sphinxcontrib-openapi-0.6.0.tar.gz (173 kB)
    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-T5Gbq2/sphinxcontrib-openapi/setup.py'"'"'; __file__='"'"'/tmp/pip-install-T5Gbq2/sphinxcontrib-openapi/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-XiwTiv
         cwd: /tmp/pip-install-T5Gbq2/sphinxcontrib-openapi/
    Complete output (46 lines):
    /tmp/easy_install-YIaJG0/setuptools_scm-6.0.1/src
    <pkg_resources.WorkingSet object at 0x7f3c06997510>
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-T5Gbq2/sphinxcontrib-openapi/setup.py", line 57, in <module>
        namespace_packages=['sphinxcontrib'],
      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 265, in __init__
        self.fetch_build_eggs(attrs.pop('setup_requires'))
      File "/usr/lib/python2.7/site-packages/setuptools/dist.py", line 289, in fetch_build_eggs
        parse_requirements(requires), installer=self.fetch_build_egg
      File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 618, in resolve
        dist = best[req.key] = env.best_match(req, self, installer)
      File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 862, in best_match
        return self.obtain(req, installer) # try and download/install
      File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 874, in obtain
        return installer(requirement)
      File "/usr/lib/python2.7/site-packages/setuptools/dist.py", line 339, in fetch_build_egg
        return cmd.easy_install(req)
      File "/usr/lib/python2.7/site-packages/setuptools/command/easy_install.py", line 623, in easy_install
        return self.install_item(spec, dist.location, tmpdir, deps)
      File "/usr/lib/python2.7/site-packages/setuptools/command/easy_install.py", line 653, in install_item
        dists = self.install_eggs(spec, download, tmpdir)
      File "/usr/lib/python2.7/site-packages/setuptools/command/easy_install.py", line 849, in install_eggs
        return self.build_and_install(setup_script, setup_base)
      File "/usr/lib/python2.7/site-packages/setuptools/command/easy_install.py", line 1130, in build_and_install
        self.run_setup(setup_script, setup_base, args)
      File "/usr/lib/python2.7/site-packages/setuptools/command/easy_install.py", line 1115, in run_setup
        run_setup(setup_script, args)
      File "/usr/lib/python2.7/site-packages/setuptools/sandbox.py", line 69, in run_setup
        lambda: execfile(
      File "/usr/lib/python2.7/site-packages/setuptools/sandbox.py", line 120, in run
        return func()
      File "/usr/lib/python2.7/site-packages/setuptools/sandbox.py", line 71, in <lambda>
        {'__file__':setup_script, '__name__':'__main__'}
      File "setup.py", line 52, in <module>
        'Programming Language :: Python :: 3.4',
      File "setup.py", line 29, in scm_config
        setup_requires=[
      File "/tmp/easy_install-YIaJG0/setuptools_scm-6.0.1/src/setuptools_scm/__init__.py", line 8, in <module>
      File "/tmp/easy_install-YIaJG0/setuptools_scm-6.0.1/src/setuptools_scm/config.py", line 6, in <module>
      File "/tmp/easy_install-YIaJG0/setuptools_scm-6.0.1/src/setuptools_scm/utils.py", line 41
        print(*k)
              ^
    SyntaxError: invalid syntax
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
WARNING: You are using pip version 20.3.3; however, version 20.3.4 is available.
You should consider upgrading via the '/usr/bin/python -m pip install --upgrade pip' command.
-bash-4.2$ ^C