我在 Centos 7 上使用最新的 Python 和专用的 virtualenv
(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
我安装scrapy的时候报错
(ENV) [luoc@study ~ ]$ pip install scrapy
Collecting scrapy
Using cached Scrapy-1.3.2-py2.py3-none-any.whl
Collecting cssselect>=0.9 (from scrapy)
Using cached cssselect-1.0.1-py2.py3-none-any.whl
Requirement already satisfied: six>=1.5.2 in ./ENV/lib/python3.6/site-packages (from scrapy)
Collecting Twisted>=13.1.0 (from scrapy)
Could not find a version that satisfies the requirement Twisted>=13.1.0 (from scrapy) (from versions: )
No matching distribution found for Twisted>=13.1.0 (from scrapy)
当我安装twisted independence时，报错
(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
那么为什么不能在Python3.6上安装Twisted呢？我的环境有问题吗？
最佳答案
我知道问题已经解决了，但我想帮助 future 的用户。
我在 Debian Strech 上，刚刚安装了 Python 3.6，
如果你想自己安装scrapy编译Python 3.6，试试运行
sudo apt-get install bzip2 libbz2-dev
之后，只需重新编译 Python 3.6 就可以了
关于python - 如何在Python3.6和CentOs上安装Twisted + Scrapy，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42230070/