安装了 virtualenv 千防万防 python，没想到 pip 坏了。。。

[Hodor]

'''
Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10258e250>, 'Connection to pypi.python.org timed out. (connect timeout=15)')': /simple/pyparsing/

Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10258e4d0>, 'Connection to pypi.python.org timed out. (connect timeout=15)')': /simple/pyparsing/

Retrying (Retry(total=2, connect=None, read=None, redirect=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10258e3d0>, 'Connection to pypi.python.org timed out. (connect timeout=15)')': /simple/pyparsing/

Retrying (Retry(total=1, connect=None, read=None, redirect=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10258e9d0>, 'Connection to pypi.python.org timed out. (connect timeout=15)')': /simple/pyparsing/

Retrying (Retry(total=0, connect=None, read=None, redirect=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x10258e650>, 'Connection to pypi.python.org timed out. (connect timeout=15)')': /simple/pyparsing/
'''

如何安装旧版本的pip

[Septembers]

curl https://bootstrap.pypa.io/get-pip.py | python

[Hodor]

@Septembers

要把现有的版本删掉吗？

[Septembers]

@Hodor 不需要

[liupy525]

这是连不上pypi.python.org吧 换个pypi的源就好了 比如v2ex的源 http://pypi.v2ex.com/simple
如果是Linux或Mac OS在 ~ 下新建 .pip 文件夹 新建pip.conf文件 把下面的内容写进去
```
[global]
index-url = http://pypi.v2ex.com/simple
```

[liupy525]

不知道怎么贴代码。。。没有那两行 ``` 哈

[Starduster]

支持 markdown
加个标签应该就可以
<code>test</code>

[Starduster]

https://www.v2ex.com/t/74249?p=2

[lilydjwg]

pypi.python.org timed out

似乎是没翻墙成功？不过好像 PyPI 已经不用翻墙了呀。

[gaotongfei]

没遇到这情况，但是貌似是功夫网的问题吧。换源或者设置timeout试试？

[onlyice]

为何觉得是 pip 坏了呢？
Log 不看的么？

[Hodor]

@onlyice
看不太懂。。求指点～

[onlyice]

@liupy525
@lilydjwg
这两位是正解

pip 的错误日志里面描述的是连 pypi.python.org 超时，而这个网站上面存储了你要安装的 Python 包，连不上导致了 pip 安装失败。并不表示 pip 就坏了。

可以换一个国内的 pypi 镜像，推荐中科大的： https://lug.ustc.edu.cn/wiki/mirrors/help/pypi

食用方法：

Windows：C:\Users\your_name\pip\pip.ini
*nix, OSX: ~/.pip/pip.conf

把下面两行写到上面对应的文件中，pip 就会使用中科大的镜像了。

[global]
index-url = https://pypi.mirrors.ustc.edu.cn/simple

[kslr]

看日志是快速确定问题的最好办法

[sailor41]

我也遇到了这类问题，然而第二次输入 pip install virtualenv 就解决了，是网络连接问题？