Windows:This Python interpreter is in a conda environment, but the environment has not been activated. 解决方案 重新安装Anaconda,在cmd窗口中输入:CALL conda.bat activatepy2neo==3.1.1 安装前需要把site-packages里面的历史文件删除,然后用whl文件安装;在cmd环境下,重启后还会报错,但是在Anaconda Prompt环境下可正常使用;