Requirement already satisfied:

个人觉得是anaconda的路径和python路径不一致造成的

试过了只要pip时候显示Requirement already satisfied:

就可以：pip install --target=路径要下载的内容

具体案例如图

错误情况：

C:\Users\Administrator>pip install scikit-learn
Requirement already satisfied: scikit-learn in d:\appdata\anaconda3\lib\site-packages (0.19.2)

更改后的：

C:\Users\Administrator>pip install --target=D:\APPData\Anaconda3\envs\pytorch\Lib\site-packages scikit-learn
pip安装Keras成功但运行还是显示No module named 'keras'也可以这样做

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