<p>我在centos7上使用最新的Python和一个专用的virtualenv</p>
<pre><code>(ENV) [luoc@study ~ ]$ lsb_release -a
LSB Version: :core-4.1-amd64:core-4.1-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-4.1-amd64:desktop-4.1-noarch:languages-4.1-amd64:languages-4.1-noarch:printing-4.1-amd64:printing-4.1-noarch
Distributor ID: CentOS
Description: CentOS Linux release 7.3.1611 (Core)
Release: 7.3.1611
Codename: Core
(ENV) [luoc@study ~ ]$ python --version
Python 3.6.0
</code></pre>
<p>当我安装scray时,错误</p>
^{pr2}$
<p>当我安装twisted independence时,错误</p>
<pre><code>(ENV) [luoc@study ~ ]$ pip install Twisted
Collecting Twisted
Could not find a version that satisfies the requirement Twisted (from versions: )
No matching distribution found for Twisted
(ENV) [luoc@study ~ ]$ pip install --verbose Twisted
Collecting Twisted
1 location(s) to search for versions of Twisted:
* https://pypi.python.org/simple/twisted/
Getting page https://pypi.python.org/simple/twisted/
Looking up "https://pypi.python.org/simple/twisted/" in the cache
Current age based on date: 40208
Freshness lifetime from max-age: 600
Freshness lifetime from request max-age: 600
The cached response is "stale" with no etag, purging
Starting new HTTPS connection (1): pypi.python.org
"GET /simple/twisted/ HTTP/1.1" 200 10196
Updating cache with response from "https://pypi.python.org/simple/twisted/"
Caching b/c date exists and max-age > 0
Analyzing links from page https://pypi.python.org/simple/twisted/
Skipping link ...
Could not find a version that satisfies the requirement Twisted (from versions: )
Cleaning up...
No matching distribution found for Twisted
Exception information:
Traceback (most recent call last):
File "/home/luoc/ENV/lib/python3.6/site-packages/pip/basecommand.py", line 215, in main
status = self.run(options, args)
File "/home/luoc/ENV/lib/python3.6/site-packages/pip/commands/install.py", line 335, in run
wb.build(autobuilding=True)
File "/home/luoc/ENV/lib/python3.6/site-packages/pip/wheel.py", line 749, in build
self.requirement_set.prepare_files(self.finder)
File "/home/luoc/ENV/lib/python3.6/site-packages/pip/req/req_set.py", line 380, in prepare_files
ignore_dependencies=self.ignore_dependencies))
File "/home/luoc/ENV/lib/python3.6/site-packages/pip/req/req_set.py", line 554, in _prepare_file
require_hashes
File "/home/luoc/ENV/lib/python3.6/site-packages/pip/req/req_install.py", line 278, in populate_link
self.link = finder.find_requirement(self, upgrade)
File "/home/luoc/ENV/lib/python3.6/site-packages/pip/index.py", line 514, in find_requirement
'No matching distribution found for %s' % req
pip.exceptions.DistributionNotFound: No matching distribution found for Twisted
</code></pre>
<p>那么为什么不能在Python3.6上安装Twisted呢?我的环境有问题吗</p>
<p><a href="https://github.com/scrapy/scrapy/issues/2563" rel="noreferrer">Kmike suggested me to ask twisted's developer</a></p>