Python——安装Scrapy时出现各种错误

利用 pip install scrapy 安装scrapy时
出现的错误：

 Using cached pyzmq-15.4.0.zipRequirement already satisfied (use --upgrade to upgrade): wcwidth in c:\users\stefan\appdata\local\programs\python\python36\lib\site-packages (from prompt-toolkit<2.0.0,>=1.0.0->jupyter-console->jupyter)Installing collected packages: nbformat, nbconvert, pyzmq, jupyter-client, tornado, ipykernel, notebook, widgetsnbextension, ipywidgets, qtconsole, jupyter-console, jupyterException:Traceback (most recent call last):  File "C:\Users\Stefan\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\basecommand.py", line 215, in main    status = self.run(options, args)  File "C:\Users\Stefan\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\commands\install.py", line 317, in run    prefix=options.prefix_path,  File "C:\Users\Stefan\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\req\req_set.py", line 742, in install    **kwargs  File "C:\Users\Stefan\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\req\req_install.py", line 831, in install    self.move_wheel_files(self.source_dir, root=root, prefix=prefix)  File "C:\Users\Stefan\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\req\req_install.py", line 1032, in move_wheel_files    isolated=self.isolated,  File "C:\Users\Stefan\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\wheel.py", line 493, in move_wheel_files    maker.make_multiple(['%s = %s' % kv for kv in console.items()])  File "C:\Users\Stefan\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\_vendor\distlib\scripts.py", line 383, in make_multiple    filenames.extend(self.make(specification, options))  File "C:\Users\Stefan\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\_vendor\distlib\scripts.py", line 372, in make    self._make_script(entry, filenames, options=options)  File "C:\Users\Stefan\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\_vendor\distlib\scripts.py", line 276, in _make_script    self._write_script(scriptnames, shebang, script, filenames, ext)  File "C:\Users\Stefan\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\_vendor\distlib\scripts.py", line 212, in _write_script    launcher = self._get_launcher('t')  File "C:\Users\Stefan\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\_vendor\distlib\scripts.py", line 351, in _get_launcher    result = finder(distlib_package).find(name).bytes  File "C:\Users\Stefan\AppData\Local\Programs\Python\Python36\lib\site-packages\pip\_vendor\distlib\resources.py", line 324, in finder    raise DistlibException('Unable to locate finder for %r' % package)pip._vendor.distlib.DistlibException: Unable to locate finder for 'pip._vendor.distlib'

上 stack overflow 查了下 ，说是python3.6的一个bug，原来用的3.6.0，因为各种bug，重装了3.6.2，但是安装时发现Twisted安装不上，需要单独安装。
解决办法：
从 http://www.lfd.uci.edu/~gohlke/pythonlibs/#scipy 下载对应版本的Twisted

然后放到Python安装目录下的Script目录下，然后在cmd里将目录切换到Script目录，运行pip install Twisted‑17.5.0‑cp36‑cp36m‑win_amd64.whl 即可。

然后再次运行pip install scrapy 等待再次安装完成~
此时输入 scrapy -h，如果出现以下情况，就证明scrapy已经安装成功