root@iZwz982qla1uxm1s5dnyo7Z:/usr/lib/python3/dist-packages/virtualenv-15.0.1.egg-info# virtualenv -p python3 venvRunning virtualenv with interpreter /usr/bin/python2New python executable in /usr/lib/python3/dist-packages/virtualenv-15.0.1.egg-info/venv/bin/python2Not overwriting existing python script /usr/lib/python3/dist-packages/virtualenv-15.0.1.egg-info/venv/bin/python (you must use /usr/lib/python3/dist-packages/virtualenv-15.0.1.egg-info/venv/bin/python2)Please make sure you remove any previous custom paths from your /root/.pydistutils.cfg file. 1 [global]Installing setuptools, pkg_resources, pip, wheel... Complete output from command /usr/lib/python3/dis...nfo/venv/bin/python2 - setuptools pkg_resources pip wheel: Collecting setuptools Downloading http://mirrors.aliyun.com/pypi/packages/ff/f4/385715ccc461885f3cedf57a41ae3c12b5fec3f35cce4c8706b1a112a133/setuptools-40.0.0-py2.py3-none-any.whl (567kB)Collecting pkg_resourcesException: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 "/usr/lib/python3/dist-packages/virtualenv-15.0.1.egg-info/venv/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)HTTPError: 404 Client Error: Not Found for url: http://mirrors.aliyun.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 /usr/lib/python3/dis...nfo/venv/bin/python2 - setuptools pkg_resources pip wheel failed with error code 2

[global]index-url = http://e.pypi.python.org/simple

yum install libffi-devel -y

rm -f venv

./configure --prefix=/usr/local/python3make && make install

rm -rf /usr/bin/python3rm -rf /usr/bin/pip3

ln -s /usr/local/python3/bin/python3.7 /usr/bin/python3ln -s /usr/local/python3/bin/pip3.7 /usr/bin/pip3

virtualenv -p /usr/bin/python3 venv

source venv/bin/activate

deactivate