系统自带3.6的Python，但是无法用Python安装pip。安装过程提醒缺失一堆依赖，而这些依赖都无法从软件仓库获取
因为很多系统软件依赖Python3，不管是autoremove还是purge都无法完全卸载预装的Python。从官网下载3.7源码编译，全程无报错，但是编译安装完成后还是无法安装pip，报错如下
Exception:
Traceback (most recent call last):
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_internal/cli/base_command.py", line 179, in main
    status = self.run(options, args)
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_internal/commands/install.py", line 255, in run
    with self._build_session(options) as session:
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_internal/cli/base_command.py", line 93, in _build_session
    insecure_hosts=options.trusted_hosts,
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_internal/download.py", line 344, in __init__
    self.headers["User-Agent"] = user_agent()
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_internal/download.py", line 108, in user_agent
    zip(["name", "version", "id"], distro.linux_distribution()),
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_vendor/distro.py", line 120, in linux_distribution
    return _distro.linux_distribution(full_distribution_name)
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_vendor/distro.py", line 675, in linux_distribution
    self.version(),
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_vendor/distro.py", line 735, in version
    self.lsb_release_attr('release'),
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_vendor/distro.py", line 892, in lsb_release_attr
    return self._lsb_release_info.get(attribute, '')
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_vendor/distro.py", line 550, in __get__
    ret = obj.__dict__[self._fname] = self._f(obj)
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_vendor/distro.py", line 998, in _lsb_release_info
    stdout = subprocess.check_output(cmd, stderr=devnull)
  File "/usr/local/python3/lib/python3.7/subprocess.py", line 395, in check_output
    **kwargs).stdout
  File "/usr/local/python3/lib/python3.7/subprocess.py", line 487, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '('lsb_release', '-a')' returned non-zero exit status 1.
Traceback (most recent call last):
  File "/usr/bin/pip3", line 10, in
    sys.exit(main())
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_internal/__init__.py", line 78, in main
    return command.main(cmd_args)
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_internal/cli/base_command.py", line 228, in main
    timeout=min(5, options.timeout)
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_internal/cli/base_command.py", line 93, in _build_session
    insecure_hosts=options.trusted_hosts,
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_internal/download.py", line 344, in __init__
    self.headers["User-Agent"] = user_agent()
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_internal/download.py", line 108, in user_agent
    zip(["name", "version", "id"], distro.linux_distribution()),
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_vendor/distro.py", line 120, in linux_distribution
    return _distro.linux_distribution(full_distribution_name)
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_vendor/distro.py", line 675, in linux_distribution
    self.version(),
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_vendor/distro.py", line 735, in version
    self.lsb_release_attr('release'),
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_vendor/distro.py", line 892, in lsb_release_attr
    return self._lsb_release_info.get(attribute, '')
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_vendor/distro.py", line 550, in __get__
    ret = obj.__dict__[self._fname] = self._f(obj)
  File "/usr/local/python3/lib/python3.7/site-packages/pip/_vendor/distro.py", line 998, in _lsb_release_info
    stdout = subprocess.check_output(cmd, stderr=devnull)
  File "/usr/local/python3/lib/python3.7/subprocess.py", line 395, in check_output
    **kwargs).stdout
  File "/usr/local/python3/lib/python3.7/subprocess.py", line 487, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '('lsb_release', '-a')' returned non-zero exit status 1.

终于解决了垃圾学校的拨号客户端问题，想着回来日常使用deepin，可是这个样子让我怎么把deepin作为主力系统啊。。。