虚拟环境的安装和配置

1.pip install virtualenv

下载很慢的情况下 用豆瓣源 https://pypi.doubanio.com/simple  pip install  -i  https://pypi.doubanio.com/simple/django  回车

virtualenv scrapytest

一定要切换到Scripts目录下 进入虚拟环境

 C:\Users\13413\scrapytest\Scripts>activate.bat

退出虚拟环境

deactivate.bat

C:\Users\13413\scrapytest\Scripts>virtualenv -p E:\Python\Python36\python.exe scrapypy3  -p后面是你得python目录

cd scrapypy3\Scripts

C:\Users\13413\scrapytest\Scripts\scrapypy3\Scripts>activate.bat 进入虚拟环境