pip install pyinstaller 时报如下错误：

Collecting future
  Using cached future-0.18.2.tar.gz (829 kB)
  Preparing metadata (setup.py) ... done
Building wheels for collected packages: future
  Building wheel for future (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: 'D:\Python310\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:....省略

核心的问题错误就是涂红色这两行，就是说building wheel for future 时错误了，找了很多贴子，都是手动下载whl 然后在安装的，其实在我测试手动下载后安装也会报错，不过报的错误是

creating dist
creating 'dist\future-0.18.2-py3.10.egg' and adding 'build\bdist.win-amd64\egg' to it
removing 'build\bdist.win-amd64\egg' (and everything under it)
Processing future-0.18.2-py3.10.egg
removing 'd:\python310\lib\site-packages\future-0.18.2-py3.10.egg' (and everything under it)
creating d:\python310\lib\site-packages\future-0.18.2-py3.10.egg
Extracting future-0.18.2-py3.10.egg to d:\python310\lib\site-packages
Adding future 0.18.2 to easy-install.pth file
error: [Errno 22] Invalid argument: 'd:\\python310\\lib\\site-packages\\easy-install.pth'

最后这一行报无效的参数，其实安装过程还是成果了，接最后没有写到easy-install.pth中，猜想如果没有写进去，其它程序调用easy-install 时同样还出错，好像是pip调用的就是easy-install.

既然你没有写进去，是不是可以手动写进去了？

查看'd:\\python310\\lib\\site-packages\\easy-install.pth'文件

 果然没有future文件，参考如上这个格式，把它手动添加进去

log可以看到它的egg

 修改完如下；

 再安装 pip install future，果然显示已经安装成果了

 此时再pip install pyinstaller (install 其它包同样会有这问题，简单的不依耐future和pefile的能正常安装)很快就成功了。

 反向测试，去掉手动修改的easy-install.pth部分

又报错

 最开始以为python cmd才有这问题，在pycham里安装同样会报错

Collecting pyinstaller
  Using cached pyinstaller-4.7-py3-none-win_amd64.whl (2.0 MB)
Collecting altgraph
  Using cached altgraph-0.17.2-py2.py3-none-any.whl (21 kB)
Collecting pywin32-ctypes>=0.2.0
  Using cached pywin32_ctypes-0.2.0-py2.py3-none-any.whl (28 kB)
Collecting pyinstaller-hooks-contrib>=2020.6
  Using cached pyinstaller_hooks_contrib-2021.3-py2.py3-none-any.whl (200 kB)
Requirement already satisfied: pefile>=2017.8.1 in d:\python310\lib\site-packages\pefile-2021.9.3-py3.10.egg (from pyinstaller) (2021.9.3)
Requirement already satisfied: setuptools in d:\python310\lib\site-packages (from pyinstaller) (59.3.0)
Collecting future
  Using cached future-0.18.2.tar.gz (829 kB)
  Preparing metadata (setup.py): started
  Preparing metadata (setup.py): finished with status 'done'
Building wheels for collected packages: future
  Building wheel for future (setup.py): started
  Building wheel for future (setup.py): finished with status 'error'
  Running setup.py clean for future
Failed to build future
Installing collected packages: future, pywin32-ctypes, pyinstaller-hooks-contrib, altgraph, pyinstaller
    Running setup.py install for future: started
    Running setup.py install for future: finished with status 'error'

  ERROR: Command errored out with exit status 1:
   command: 'D:\Python310\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] 

总结：整个pyinstaller 不能安装成功的原因是缺少future库的支持，而手动安装future库最后也报错，没有写入到easy-install.pth文件中

        因此打破链路的重点就是手动加入到easy-install中。

此时无论在cmd使用pip安装还是使用pycham安装都不会错。

就这么简单的问题，折腾了一下午，好久没用python，想再用用，结果出错，重新安装版本，重启电脑，更新pip，wheel，手动下载然后用setup安装都试过了！

吃一暂长一智，希望后面的同学能参考，不要总是手动去安装了，pip还是方便很多。