Python 在Ubuntu 16.04上安装web套接字时出错

我尝试在服务器目录中安装的：

pip install-r requirements.txt

这将抛出错误belog。我还试着用

sudo-H pip install-r requirements.txt运行它，但它仍然给我同样的错误

我更新了setuptools:
sudoeasy\U install-U setuptools
，pip在9.0.3上

以下是日志：

Command "python setup.py egg_info" failed with error code 1 in 

/tmp/pip-build-z6ewX7/websockets/
Exception information:
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/pip/basecommand.py", line 215, in main
    status = self.run(options, args)
  File "/usr/local/lib/python2.7/dist-packages/pip/commands/install.py", line 324, in run
    requirement_set.prepare_files(finder)
  File "/usr/local/lib/python2.7/dist-packages/pip/req/req_set.py", line 380, in prepare_files
    ignore_dependencies=self.ignore_dependencies))
  File "/usr/local/lib/python2.7/dist-packages/pip/req/req_set.py", line 634, in _prepare_file
    abstract_dist.prep_for_dist()
  File "/usr/local/lib/python2.7/dist-packages/pip/req/req_set.py", line 129, in prep_for_dist
    self.req_to_install.run_egg_info()
  File "/usr/local/lib/python2.7/dist-packages/pip/req/req_install.py", line 439, in run_egg_info
    command_desc='python setup.py egg_info')
  File "/usr/local/lib/python2.7/dist-packages/pip/utils/__init__.py", line 707, in call_subprocess
    % (command_desc, proc.returncode, cwd))
InstallationError: Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-z6ewX7/websockets/

我在服务器上运行ubuntu 16.04

到目前为止，我发现错误来自于

它是否与我的服务器设置有关，或者我可以尝试解决什么错误