下载安装 Python3
https://www.python.org/ftp/python/3.7.1/python-3.7.1-amd64.exe
安装完成后
pip3 install scrapy
报错
error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": http://landinghub.visualstudio.com/visual-cpp-build-tools

解决方法:安装 Microsoft visual c++ 14.0
https://964279924.ctfile.com/fs/1445568-239446865
或
https://pan.baidu.com/s/1q2Nj41Xk85CHHv7_zOhQIA 密码:qbba

安装完成

有可能会出现找不到win32api的错误 error: No module named win32api,安装如下模块即可:
pip3 install pypiwin32
安装 Twisted
pip install Twisted
升级 pip
python -m pip install --upgrade pip
pip install PyMySQL
pip install selenium
pip install sqlalchemy
pip3 install sqlalchemy-utils