下午想要安装 scrapy框架时报错，如图：
网上查了一下：因为网络差导致安装超时，所以用安装时指定源的方法可以解决：
pip install scrapy -i https://pypi.tuna.tsinghua.edu.cn/simple
红色的字体表示要安装的模块
python pip install 报：HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.错误
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Python报错ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
解决pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
pip安装超时问题-pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
更改pip源 / 解决 ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read
selenium+python自动化83-pip安装selenium报Read time out HTTPSConnectionPool(host='pypi.python.org' port443）
pip安装超时：Read timed out.