Twisted scrapy installation and troubleshooting a failed installation

Before installing scrapy

To install the following package:


    1. pip install lxml
    2.  
      pip install w3lib 
    3.  
      pip install parcels
    4.  
      pip install cryptography
    5.  
      pip install pyOpenSSL

    6. pip install twisted

 

Here twisted when installed directly in the package being given, so to https://www.lfd.uci.edu/~gohlke/pythonlibs/#twisted download files .whl

The version number is later cp python, the Win32 and win_amd64 represent 32 and 64 version of the computer, such as computer I is 64, is installed python 3.7, download Twisted-19.2.0-cp37-cp37m-win32 .whl, it can be used.

In .whl command line to install the downloaded file, enter the command: pip install F: \ python-3.7.2 \ full path to the preservation of Twisted-19.2.0-cp37-cp37m-win32.whl here to write files.

Can be installed after the installation was successful scrapy, enter the command: pip install scrapy

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Origin www.cnblogs.com/xiaoxiaodevlog/p/10927037.html
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