Pip 找不到任何满足 Flask==0.10.1 要求的下载

Question

这太奇怪了，因为这以前在我的机器上工作过。我从 github 分叉了一个 repo，创建了一个新的 virtualenv，然后尝试了

pip install -r requirements.txt

我收到以下错误：

Downloading/unpacking Flask==0.10.1 (from -r requirements.txt (line 1))
  Could not find any downloads that satisfy the requirement Flask==0.10.1 (from -r requirements.txt (line 1))
Cleaning up...
No distributions at all found for Flask==0.10.1 (from -r requirements.txt (line 1))
Storing debug log for failure in /home/michael/.pip/pip.log

以下内容存储在我的调试日志中：

/home/michael/git/blueprint_ex/env/bin/pip run on Thu Dec 24 09:57:08 2015
Downloading/unpacking Flask==0.10.1 (from -r requirements.txt (line 1))
  Getting page https://pypi.python.org/simple/Flask/
  URLs to search for versions for Flask==0.10.1 (from -r     requirements.txt (line 1)):
  * https://pypi.python.org/simple/Flask/0.10.1
  * https://pypi.python.org/simple/Flask/
  Getting page https://pypi.python.org/simple/Flask/0.10.1
  Could not fetch URL https://pypi.python.org/simple/Flask/0.10.1: 404 Client Error: Not Found
  Will skip URL https://pypi.python.org/simple/Flask/0.10.1 when looking for download links for Flask==0.10.1 (from -r requirements.txt (line 1))
  Analyzing links from page https://pypi.python.org/simple/flask/
  Could not find any downloads that satisfy the requirement Flask==0.10.1 (from -r requirements.txt (line 1))
Cleaning up...
No distributions at all found for Flask==0.10.1 (from -r requirements.txt (line 1))
Exception information:
Traceback (most recent call last):
  File "/home/michael/git/blueprint_ex/env/local/lib/python2.7/site-packages/pip/basecommand.py", line 122, in main
    status = self.run(options, args)
  File "/home/michael/git/blueprint_ex/env/local/lib/python2.7/site-packages/pip/commands/install.py", line 304, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "/home/michael/git/blueprint_ex/env/local/lib/python2.7/site-packages/pip/req.py", line 1178, in prepare_files
url = finder.find_requirement(req_to_install, upgrade=self.upgrade)
  File "/home/michael/git/blueprint_ex/env/local/lib/python2.7/site-packages/pip/index.py", line 277, in find_requirement
raise DistributionNotFound('No distributions at all found for %s' % req)
 DistributionNotFound: No distributions at all found for Flask==0.10.1 (from -r requirements.txt (line 1))

我的 requirements.txt 文件看起来像

Flask==0.10.1
Flask-SQLAlchemy==2.0
Flask-WTF==0.11
Jinja2==2.8
MarkupSafe==0.23
SQLAlchemy==1.0.10
WTForms==2.1
Werkzeug==0.11.3
argparse==1.2.1
coverage==3.7.1
itsdangerous==0.24
nose==1.3.4
wsgiref==0.1.2                 

有人知道问题出在哪里吗？我以前能够在同一台机器上的不同 virtualenv 上安装 Flask，所以这特别令人沮丧。而且，我试过了

pip install SQLAlchemy

这很好用。

pip install Flask

或

pip install Flask==0.10.1

给我与上面相同的错误消息。

有什么想法吗？

谢谢！

Answer 1

请测试您是否可以访问“https://pypi.python.org/simple/Flask/”。也许你需要为 https 设置代理。