使用 pip install pymysql时,出现:Requirement already satisfied: pymysql in d:\python\python3.6\lib\site-packages (1.0.2)
解决方案:
pip install –target=路径 包名:
pip install –target=d:\python\python3.6\lib\site-packages pymysql
结果:安装成功了,但是出现了警告:
WARNING: Target directory d:\python\python3.6\lib\site-packages\pymysql already exists. Specify –upgrade to force replacement.
解决方案:
意思是已存在,需要强制替换的话就在最后面加–upgrade
pip install –target=d:\python\python3.6\lib\site-packages pymysql –upgrade
结果:
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