1.首先使用 pip install scrapy命令安裝，快安裝完成的時候報了一堆紅色錯誤，
底部提示
You are using pip version 8.1.2, however version 9.0.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
照着命令輸入pip install --upgrade pip，還是提示這個命令，後來在命令後面加入了--user，就更新成功了
命令如下：pip install --upgrade pip --user 或者使用如下命令python -m pip install -U pip
3.再次輸入pip install scrapy命令安裝時，居然報錯'module' object is not callable
這就很奇怪了啊，不知道什麼原因，也許是pip還是沒安裝成功，或者是其他什麼原因，只能重新安裝了
4.解決方法：輸入命令：easy_install pip
此時提示我沒權限，直接找到cmd.exe文件，右鍵管理員身份運行，再執行命令，easy_install pip
Searching for pip
Best match: pip 19.3.1
Adding pip 19.3.1 to easy-install.pth file
Installing pip-script.py script to c:\program files\python37\Scripts
Installing pip.exe script to c:\program files\python37\Scripts
Installing pip3-script.py script to c:\program files\python37\Scripts
Installing pip3.exe script to c:\program files\python37\Scripts
Installing pip3.7-script.py script to c:\program files\python37\Scripts
Installing pip3.7.exe script to c:\program files\python37\Scripts
再輸入命令：pip install --upgrade pip
Requirement already up-to-date: pip in /usr/local/lib/python2.7/dist-packages
此時再安裝pip install scrapy，就安裝成功了