安装scrapy出错Failed building wheel for Twisted

用64位windows10的CMD命令安装pip install scrapy出错：

Running setup.py bdist_wheel for Twisted ... error

Failed building wheel for Twisted

Running setup.py clean for Twisted

Failed to build Twisted

Installing collected packages: pycparser, cffi, asn1crypto, cryptography, pyOpenSSL, Twisted, pyasn1, pyasn1-modules, service-identity, queuelib, scrapy

Running setup.py install for Twisted ... error

Exception:

Traceback (most recent call last):

File "e:\python\envs\py2scripy\lib\site-packages\pip\compat\__init__.py", line 73, in console_to_str

return s.decode(sys.__stdout__.encoding)

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb6 in position 30: invalid start byte

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

File "e:\python\envs\py2scripy\lib\site-packages\pip\basecommand.py", line 215, in main

status = self.run(options, args)

File "e:\python\envs\py2scripy\lib\site-packages\pip\commands\install.py", line 342, in run

prefix=options.prefix_path,

File "e:\python\envs\py2scripy\lib\site-packages\pip\req\req_set.py", line 784, in install

**kwargs

File "e:\python\envs\py2scripy\lib\site-packages\pip\req\req_install.py", line 878, in install

spinner=spinner,

File "e:\python\envs\py2scripy\lib\site-packages\pip\utils\__init__.py", line 676, in call_subprocess

line = console_to_str(proc.stdout.readline())

File "e:\python\envs\py2scripy\lib\site-packages\pip\compat\__init__.py", line 75, in console_to_str

return s.decode('utf_8')

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xb6 in position 30: invalid start byte

解决方法：

参考连接方法：

https://stackoverflow.com/questions/45830222/a-error-happened-while-pip-was-installing-scrapy