Ubuntu pkg_resources.DistributionNotFound: The 'Scrapy==1.0.3' distribution was not found and is required by the application

在Ubuntu16.0.4上安裝scrapy，參考：Ubuntu16.04安裝Scrapy命令

都安裝成功后，import scrapy也都沒出錯，但是在終端輸入：scrapy 命令時出現錯誤：

File "/usr/local/python2.7/lib/python2.7/site-packages/pkg_resources/__init__.py", line 870, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'Scrapy==1.0.3' distribution was not found and is required by the application

             【翻譯： pkg_resources.DistributionNotFound：'Scrapy == 1.0.3'發行版沒有被發現，並且是應用程序所要求的】

 

找原因：pip install scrapy默認給安裝的scrapy版本是Scrapy 1.0.3-1       而給出的提示是應用程序需要Scrapy 1.0.3

解決方法：在終端輸入：sudo pip install Scrapy==1.0.3

 

這樣問題就解決了，在終端輸入：scrapy   出現如下