HTTP errors are often intermittent, and a simple retry will get you on your way. ConnectionError
使用anaconda安裝scrapy是報錯：HTTP errors are often intermittent, and a simple retry will get you on your way.
ConnectionError(ReadTimeoutError("HTTPSConnectionPool(host='conda.anaconda.org', port=443): Read timed out.",),)
由以上錯誤提示知都是網路問題，導致安裝失敗。Anaconda預設的映象源大部分都在國外，國內很多網路環境下，訪問不穩定，下載速率慢，有時根本連線不上，另外國內也有映象源，可以修改Anaconda的映象源為國內的。
可以修改映象源為https://mirrors.ustc.edu.cn/anaconda/pkgs/free/，
在Anaconda Navigator裡設定，
將原來的映象源給更換了，此時在使用conda install scrapy 安裝時，便不會報錯了，而且安裝的特別快。
安裝完成後，輸入scrapy，出現以下介面，即安裝成功！
或者是在Anaconda Navigator裡安裝：
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