问无法在服务器上面创建虚拟环境，如何解决？

在云服务器上面使用virtualenv创建虚拟环境报错如下：

```

Running virtualenv with interpreter /home/ubuntu/web_server/app1/bin/python3.5

Using real prefix '/usr'

Path not in prefix '/home/ubuntu/web_server/app1/include/python3.5m' '/usr'

New python executable in /home/ubuntu/web_server/webBlog/blogenv/bin/python3.5

Also creating executable in /home/ubuntu/web_server/webBlog/blogenv/bin/python

Please make sure you remove any previous custom paths from your /root/.pydistutils.cfg file.

Installing setuptools, pkg_resources, pip, wheel...

Complete output from command /home/ubuntu/web_ser...logenv/bin/python3.5 - setuptools pkg_resources pip wheel:

Collecting setuptools

Downloading http://mirrors.tencentyun.com/pypi/packages/6a/9a/50fadfd53ec909e4399b67c74cc7f4e883488035cfcdb90b685758fa8b34/setuptools-41.4.0-py2.py3-none-any.whl (580kB)

Collecting pkg_resources

Exception:

Traceback (most recent call last):

File "/usr/share/python-wheels/pip-8.1.1-py2.py3-none-any.whl/pip/basecommand.py", line 209, in main

status = self.run(options, args)

File "/usr/share/python-wheels/pip-8.1.1-py2.py3-none-any.whl/pip/commands/install.py", line 328, in run

wb.build(autobuilding=True)

File "/usr/share/python-wheels/pip-8.1.1-py2.py3-none-any.whl/pip/wheel.py", line 748, in build

self.requirement_set.prepare_files(self.finder)

File "/usr/share/python-wheels/pip-8.1.1-py2.py3-none-any.whl/pip/req/req_set.py", line 360, in prepare_files

ignore_dependencies=self.ignore_dependencies))

File "/usr/share/python-wheels/pip-8.1.1-py2.py3-none-any.whl/pip/req/req_set.py", line 512, in _prepare_file

finder, self.upgrade, require_hashes)

File "/usr/share/python-wheels/pip-8.1.1-py2.py3-none-any.whl/pip/req/req_install.py", line 273, in populate_link

self.link = finder.find_requirement(self, upgrade)

File "/usr/share/python-wheels/pip-8.1.1-py2.py3-none-any.whl/pip/index.py", line 442, in find_requirement

all_candidates = self.find_all_candidates(req.name)

File "/usr/share/python-wheels/pip-8.1.1-py2.py3-none-any.whl/pip/index.py", line 400, in find_all_candidates

for page in self._get_pages(url_locations, project_name):

File "/usr/share/python-wheels/pip-8.1.1-py2.py3-none-any.whl/pip/index.py", line 545, in _get_pages

page = self._get_page(location)

File "/usr/share/python-wheels/pip-8.1.1-py2.py3-none-any.whl/pip/index.py", line 648, in _get_page

return HTMLPage.get_page(link, session=self.session)

File "/usr/share/python-wheels/pip-8.1.1-py2.py3-none-any.whl/pip/index.py", line 760, in get_page

resp.raise_for_status()

File "/home/ubuntu/web_server/webBlog/blogenv/share/python-wheels/requests-2.9.1-py2.py3-none-any.whl/requests/models.py", line 840, in raise_for_status

raise HTTPError(http_error_msg, response=self)

pip._vendor.requests.exceptions.HTTPError: 404 Client Error: Not Found for url: http://mirrors.tencentyun.com/pypi/simple/pkg-resources/

----------------------------------------

...Installing setuptools, pkg_resources, pip, wheel...done.

Traceback (most recent call last):

File "/usr/lib/python3/dist-packages/virtualenv.py", line 2363, in <module>

main()

File "/usr/lib/python3/dist-packages/virtualenv.py", line 719, in main

symlink=options.symlink)

File "/usr/lib/python3/dist-packages/virtualenv.py", line 988, in create_environment

download=download,

File "/usr/lib/python3/dist-packages/virtualenv.py", line 918, in install_wheel

call_subprocess(cmd, show_stdout=False, extra_env=env, stdin=SCRIPT)

File "/usr/lib/python3/dist-packages/virtualenv.py", line 812, in call_subprocess

% (cmd_desc, proc.returncode))

OSError: Command /home/ubuntu/web_ser...logenv/bin/python3.5 - setuptools pkg_resources pip wheel failed with error code 2

```

是不是腾讯云的网络环境问题。