我正在尝试安装本地版本的 ScrumDo 进行测试。只有这样我才能在我的安装中找到必须运行的 pip :

source bin/activate
pip install -r requirements.txt

我得到错误:

Downloading/unpacking django-storages

Cannot fetch index base URL http : //b.pypi.python.org/simple/
Could not find any downloads that satisfy the requirement django-storages

根本没有找到 django-storages 的发行版
将完整的日志存储在./pip-log.txt

我用谷歌搜索了一下，在这里和 Stack Overflow 上进行了搜索，发现我应该添加一个 --proxy= 选项和/或取消设置我的 http_proxy 环境变量。但是我的安装没有代理，也没有设置环境变量。我试着运行

pip install -r requirements.txt --proxy=

但错误仍然存​​在。我还创建了一个/root/.pip/pip.conf 包含:

[global]
index-url = http : //b.pypi.python.org/simple

并检查服务器是否确实在线，如果包 django-storages 存在，这都是真的。

自从 install doc of ScrumDo 以来，我最后尝试的一件事是这样说的:

pip install -U Django==1.1.4

还是没有成功...错误总是一样，有人有什么想法吗？

我的 pip-error.log 显示以下内容(该 URL 在同一网络中的另一台机器上的 firefox 中工作，也没有使用代理，我可以从同一台机器上 ping 它):

/var/www/ScrumDo/pinax-env/bin/pip run on Mon Jul 30 10:24:08 2012
proxy):

Downloading/unpacking Django==1.1.4
proxy):

  Getting page http://b.pypi.python.org/simple/Django
proxy):

  Could not fetch URL http://b.pypi.python.org/simple/Django: HTTP Error 404: Not Found
proxy):

  Will skip URL http://b.pypi.python.org/simple/Django when looking for download links for Django==1.1.4
proxy):

  Getting page http://b.pypi.python.org/simple/
proxy):

  Could not fetch URL http://b.pypi.python.org/simple/: HTTP Error 404: Not Found
proxy):

  Will skip URL http://b.pypi.python.org/simple/ when looking for download links for Django==1.1.4
proxy):

  Cannot fetch index base URL http://b.pypi.python.org/simple/
proxy):

  URLs to search for versions for Django==1.1.4:
proxy):

  * http://b.pypi.python.org/simple/Django/1.1.4
proxy):

  * http://b.pypi.python.org/simple/Django/
proxy):

  Getting page http://b.pypi.python.org/simple/Django/1.1.4
proxy):

  Getting page http://b.pypi.python.org/simple/Django/
proxy):

  Could not fetch URL http://b.pypi.python.org/simple/Django/1.1.4: HTTP Error 404: Not Found
proxy):

  Will skip URL http://b.pypi.python.org/simple/Django/1.1.4 when looking for download links for Django==1.1.4
proxy):

  Could not fetch URL http://b.pypi.python.org/simple/Django/: HTTP Error 404: Not Found
proxy):

  Will skip URL http://b.pypi.python.org/simple/Django/ when looking for download links for Django==1.1.4
proxy):

  Could not find any downloads that satisfy the requirement Django==1.1.4
No distributions at all found for Django==1.1.4
proxy):

Exception information:
proxy):

Traceback (most recent call last):
  File "/var/www/ScrumDo/pinax-env/lib/python2.6/site-packages/pip-0.6.1-py2.6.egg/pip.py", line 482, in main
proxy):

    self.run(options, args)
proxy):

  File "/var/www/ScrumDo/pinax-env/lib/python2.6/site-packages/pip-0.6.1-py2.6.egg/pip.py", line 675, in run
proxy):

    requirement_set.install_files(finder, force_root_egg_info=self.bundle)
proxy):

  File "/var/www/ScrumDo/pinax-env/lib/python2.6/site-packages/pip-0.6.1-py2.6.egg/pip.py", line 2422, in install_files
proxy):

    url = finder.find_requirement(req_to_install, upgrade=self.upgrade)
proxy):

proxy):

  File "/var/www/ScrumDo/pinax-env/lib/python2.6/site-packages/pip-0.6.1-py2.6.egg/pip.py", line 1485, in find_requirement
proxy):

proxy):

    raise DistributionNotFound('No distributions at all found for %s' % req)
proxy):


proxy):

DistributionNotFound: No distributions at all found for Django==1.1.4

最佳答案

如果你最近尝试过使用 pip 安装包，你可能会遇到这个错误:

Could not fetch URL https://pypi.python.org/simple/Django/: There was a problem confirming the ssl certificate: <urlopen error [Errno 1] _ssl.c:504: error:0D0890A1:asn1 encoding routines:ASN1_verify:unknown message digest algorithm>
  Will skip URL https://pypi.python.org/simple/Django/ when looking for download links for Django==1.5.1 (from -r requirements.txt (line 1))
  Could not fetch URL https://pypi.python.org/simple/: There was a problem confirming the ssl certificate: <urlopen error [Errno 1] _ssl.c:504: error:0D0890A1:asn1 encoding routines:ASN1_verify:unknown message digest algorithm>
  Will skip URL https://pypi.python.org/simple/ when looking for download links for Django==1.5.1 (from -r requirements.txt (line 1))
  Cannot fetch index base URL https://pypi.python.org/simple/
  Could not fetch URL https://pypi.python.org/simple/Django/1.5.1: There was a problem confirming the ssl certificate: <urlopen error [Errno 1] _ssl.c:504: error:0D0890A1:asn1 encoding routines:ASN1_verify:unknown message digest algorithm>
  Will skip URL https://pypi.python.org/simple/Django/1.5.1 when looking for download links for Django==1.5.1 (from -r requirements.txt (line 1))
  Could not fetch URL https://pypi.python.org/simple/Django/: There was a problem confirming the ssl certificate: <urlopen error [Errno 1] _ssl.c:504: error:0D0890A1:asn1 encoding routines:ASN1_verify:unknown message digest algorithm>
  Will skip URL https://pypi.python.org/simple/Django/ when looking for download links for Django==1.5.1 (from -r requirements.txt (line 1))
  Could not find any downloads that satisfy the requirement Django==1.5.1 (from -r requirements.txt (line 1))
No distributions at all found for Django==1.5.1 (from -r requirements.txt (line 1))
Storing complete log in /Users/paul/.pip/pip.log

这似乎是旧版本的 OpenSSL 与 pip 1.3.1 不兼容的问题。如果您使用的是非库存 Python 发行版(尤其是 EPD 7.3)，您的设置很可能在没有大量工作的情况下无法与 pip 1.3.1 一起使用。

目前最简单的解决方法是安装不需要 SSL 的 pip 1.2.1:

curl -o https://pypi.python.org/packages/source/p/pip/pip-1.2.1.tar.gz
tar xvfz pip-1.2.1.tar.gz
cd pip-1.2.1
python setup.py install

如果您正在使用 EPD，并且您没有将它用于可能会出现问题的类(class)，您可能需要考虑安装新的化身:Enthought Canopy。我知道他们知道以前版本的 OpenSSL 引起的问题，并且可以想象他们现在使用的是新版本，应该可以很好地与 pip 1.3.1 配合使用。

关于python - 使用 Python “pip” : Cannot fetch index base URL http://安装时出错，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/11724779/