无法安装 cytoolz.

问题描述：安装web3 （命令：pip3 install web3==5.31.3）的时候报错

Collecting cytoolz<1.0.0,>=0.10.1; implementation_name == "cpython" (from eth-utils<2.0.0,>=1.9.5->web3==5.31.3)
  Using cached https://files.pythonhosted.org/packages/da/89/66bac516a236af8375dd7af2b3032a210e222395670758da4b2439b37e40/cytoolz-0.12.1.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "", line 1, in 
      File "/tmp/pip-build-v05vrmez/cytoolz/setup.py", line 59, in 
        raise RuntimeError('Cython required to build dev version of cytoolz.')
    RuntimeError: Cython required to build dev version of cytoolz.

到处搜，找不到原因

需要安装Cython才能构建cytoolz模块。您可以使用以下命令来安装Cython：pip3 install Cython
然后在重新来一次web3试试