pip install web3 一直失败！！！（超级无敌血泪史）

Collecting web3
 
Building wheels for collected packages: bitarray, lru-dict
  Building wheel for bitarray (setup.py): started
  Building wheel for bitarray (setup.py): finished with status 'error'
  Running setup.py clean for bitarray
  Building wheel for lru-dict (setup.py): started
  Building wheel for lru-dict (setup.py): finished with status 'error'
  Running setup.py clean for lru-dict
Failed to build bitarray lru-dict

Installing collected packages: bitarray, lru-dict, eth-account, web3

  Attempting uninstall: bitarray
    Found existing installation: bitarray 1.7.1
    Uninstalling bitarray-1.7.1:
      Successfully uninstalled bitarray-1.7.1

    Running setup.py install for bitarray: started
    Running setup.py install for bitarray: finished with status 'error'
  Rolling back uninstall of bitarray

 
  ERROR: Command errored out with exit status 1:
   command: 'D:\Python\Python38\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\Administrator\\AppData\\Local\\Temp\\pip-install-x4q38lj3\\bitarray_13323f72a3ea4f0f9cf4960d95dfd778\\setup.py'"'"'; __file__='"'"'C:\\Users\\Administrator\\AppData\\Local\\Temp\\pip-install-x4q38lj3\\bitarray_13323f72a3ea4f0f9cf4960d95dfd778\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d 'C:\Users\Administrator\AppData\Local\Temp\pip-wheel-nkwq_9g5'
       cwd: C:\Users\Administrator\AppData\Local\Temp\pip-install-x4q38lj3\bitarray_13323f72a3ea4f0f9cf4960d95dfd778\
  Complete output (15 lines):
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build\lib.win-amd64-3.8
  creating build\lib.win-amd64-3.8\bitarray
  copying bitarray\test_bitarray.py -> build\lib.win-amd64-3.8\bitarray
  copying bitarray\test_util.py -> build\lib.win-amd64-3.8\bitarray
  copying bitarray\util.py -> build\lib.win-amd64-3.8\bitarray
  copying bitarray\__init__.py -> build\lib.win-amd64-3.8\bitarray
  warning: build_py: byte-compiling is disabled, skipping.
  
  running build_ext
  building 'bitarray._bitarray' extension
  error: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": https://visualstudio.microsoft.com/visual-cpp-build-tools/
  ----------------------------------------
  ERROR: Failed building wheel for bitarray
  ERROR: Command errored out with exit status 1:
   command: 'D:\Python\Python38\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\Administrator\\AppData\\Local\\Temp\\pip-install-x4q38lj3\\lru-dict_5656a7b5d4374bfb98a1bfd33e3c5c94\\setup.py'"'"'; __file__='"'"'C:\\Users\\Administrator\\AppData\\Local\\Temp\\pip-install-x4q38lj3\\lru-dict_5656a7b5d4374bfb98a1bfd33e3c5c94\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d 'C:\Users\Administrator\AppData\Local\Temp\pip-wheel-z30my9oz'
       cwd: C:\Users\Administrator\AppData\Local\Temp\pip-install-x4q38lj3\lru-dict_5656a7b5d4374bfb98a1bfd33e3c5c94\
  Complete output (5 lines):
  running bdist_wheel
  running build
  running build_ext
  building 'lru' extension
  error: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": https://visualstudio.microsoft.com/visual-cpp-build-tools/
  ----------------------------------------
  ERROR: Failed building wheel for lru-dict
    ERROR: Command errored out with exit status 1:
     command: 'D:\Python\Python38\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\Administrator\\AppData\\Local\\Temp\\pip-install-x4q38lj3\\bitarray_13323f72a3ea4f0f9cf4960d95dfd778\\setup.py'"'"'; __file__='"'"'C:\\Users\\Administrator\\AppData\\Local\\Temp\\pip-install-x4q38lj3\\bitarray_13323f72a3ea4f0f9cf4960d95dfd778\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\Administrator\AppData\Local\Temp\pip-record-2ejcfvyj\install-record.txt' --single-version-externally-managed --compile --install-headers 'D:\Python\Python38\Include\bitarray'
         cwd: C:\Users\Administrator\AppData\Local\Temp\pip-install-x4q38lj3\bitarray_13323f72a3ea4f0f9cf4960d95dfd778\
    Complete output (15 lines):
    running install
    running build
    running build_py
    creating build
    creating build\lib.win-amd64-3.8
    creating build\lib.win-amd64-3.8\bitarray
    copying bitarray\test_bitarray.py -> build\lib.win-amd64-3.8\bitarray
    copying bitarray\test_util.py -> build\lib.win-amd64-3.8\bitarray
    copying bitarray\util.py -> build\lib.win-amd64-3.8\bitarray
    copying bitarray\__init__.py -> build\lib.win-amd64-3.8\bitarray
    warning: build_py: byte-compiling is disabled, skipping.
    
    running build_ext
    building 'bitarray._bitarray' extension
    error: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": https://visualstudio.microsoft.com/visual-cpp-build-tools/
    ----------------------------------------
ERROR: Command errored out with exit status 1: 'D:\Python\Python38\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\Administrator\\AppData\\Local\\Temp\\pip-install-x4q38lj3\\bitarray_13323f72a3ea4f0f9cf4960d95dfd778\\setup.py'"'"'; __file__='"'"'C:\\Users\\Administrator\\AppData\\Local\\Temp\\pip-install-x4q38lj3\\bitarray_13323f72a3ea4f0f9cf4960d95dfd778\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\Administrator\AppData\Local\Temp\pip-record-2ejcfvyj\install-record.txt' --single-version-externally-managed --compile --install-headers 'D:\Python\Python38\Include\bitarray' Check the logs for full command output.

以上是有省略的，太长了，，，大概的意思就是缺少包，我这里显示是少了bitarray, lru-dict,cytoolz 三个，少了就直接pip install呗，但是！！安装不了啊，在网上看了很多解决方法，大部分都是说直接去找缺少的whl，然后导进去

https://www.lfd.uci.edu/~gohlke/pythonlibs/

https://pypi.org/

一般的包这两个网页里都可以找到，找到对应whl版本下载到本地一个文件夹，然后cmd进到文件夹再用pip install就可以安装成功了。

如果需要的包没有 whl 的，只有 .tar.gz 的，就下载解压后进入解压后的文件夹，用 python install setup.py 安装。

我的 lru-dict,cytoolz 两个包就是这样安装成功的，但是！！！bitarray安装成功后还是一直报错，并且好像还是又给我自动卸载了！！！！

没办法了呀，怎样卸载安装都不成功，并且一直都有一个错误想忽略都不得

 error: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": https://visualstudio.microsoft.com/visual-cpp-build-tools/

只能安装了呗，没办法呀，一直卡在安装这，，

点击 Microsoft Visual C++ Build Tools下载，提取码：5k3t。

双击Microsoft Visual C++ Build Tools.exe，选择默认即可，点击安装，等待是漫长的，去做点别的吧


看到这样子别怕，hhh 可以安装了

pip install web3 -i https://pypi.tuna.tsinghua.edu.cn/simple

安装成功！！！

参考博客：

以太坊智能合约项目开发——Web3.py库安装及错误解决方案

error: Microsoft Visual C++ 14.0 is required问题最佳解决方法

Python 典藏篇-Microsoft Visual C++ 14.0 is required，官方vc++运行库工具一键式解决！