我认为我的问题与this不同，因为我也想知道使用--no-cache-dir安装时会发生什么。我也想知道为什么下面的1可以工作，但是下面的2和3无法安装。
我有Windows 10和Python 3.5.3 :: Anaconda自定义（64位）。我想安装spacy
conda install -c conda-forge spacy为我工作。 pip install -U spacy，但遇到错误Failed building wheel for ujson和Failed building wheel for cytoolz
Running setup.py clean for cytoolz
Failed to build ujson cytoolz
Installing collected packages: cytoolz, thinc, ujson, spacy
Found existing installation: cytoolz 0.8.2
Cannot uninstall 'cytoolz'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall. pip install --no-cache-dir spacy，但给出了错误Cannot uninstall 'cytoolz'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.
我根据this question的输入运行了此命令。3个命令之间有什么区别？ 3个命令安装的spacy软件包有什么区别吗？