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.zip
Requirement 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, jupyter
Exception:
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