运行 pip install scrapy运行到Running setup.py bdist_wheel for cryptography 不动了有人碰到过吗？注：1 在window和mac上都安装成功的2 python换了阿里的源。话说阿里云怎么fq的？3 试了好多次都不行
==============分割线=====================
把这个命令扔后台了，第二天就好了，看来问题就是时间不够长！！！
光阴似箭催人老，日月如移越少年。
Python recommends using the anaconda distribution, which comes with all commonly used packages. If not, you can use conda install xxx to download, which is fast and avoids local compilation dependencies. Send https://www.continuum.io/down.. .
https://mirrors.tuna.tsinghua...
I left this command in the background yesterday and ran it. It’s fine today.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Python recommends using the anaconda distribution, which comes with all commonly used packages.
If not, you can use conda install xxx to download, which is fast and avoids local compilation dependencies.
Send https://www.continuum.io/down.. .
https://mirrors.tuna.tsinghua...
I left this command in the background yesterday and ran it. It’s fine today.