安装环境：win10虚拟机vmware下ubuntu18.04,虚拟机内存4G
错误提示如下：
Generating locales (this might take a while)...
zh_CN.GB18030...??????????"/usr/lib/locale/locale-archive": ????
done
Generation complete.
Processing /home/lu/anaconda3/envs/vnpy/lib/python3.7/site-packages
ERROR: Command errored out with exit status 1:
command: /home/lu/anaconda3/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-req-build-_klkvgzo/setup.py'"'"'; __file__='"'"'/tmp/pip-req-build-_klkvgzo/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-it7qwkfm
cwd: /tmp/pip-req-build-_klkvgzo/
Complete output (9 lines):
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/tmp/pip-req-build-_klkvgzo/setuptools/__init__.py", line 3, in <module>
from fnmatch import fnmatchcase
File "/home/lu/anaconda3/lib/python3.7/fnmatch.py", line 14, in <module>
import re
File "/home/lu/anaconda3/lib/python3.7/re.py", line 143, in <module>
class RegexFlag(enum.IntFlag):
AttributeError: module 'enum' has no attribute 'IntFlag'
----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.在网上搜索“AttributeError: module 'enum' has no attribute 'IntFlag'”解决方法，是enmu34库不兼容导致，卸载enmu34后提示缺少pytz==2019.3、simplejson==3.17.0，安装这两个包以后重新bash install.sh又提示最上面的错误。始终不知问题原因所在，恳请高手给予指点！多谢
