我的python无法下载pip

Question

各位大拿，我的mac电脑下载的是python 2.7.10的环境，之前成功下载了pip，但是最近要用pip下载lxml和bs4环境的时候发现我的pip居然没了，终端结果如下：
MacBook-Pro:~ zhenghongyu$ pip -V
-bash: pip: command not found
然后我尝试重新下载pip，结果一直显示error，终端结果如下：
MacBook-Pro:~ $ sudo easy_install pip
Password:
Searching for pip
Reading https://pypi.python.org/simple/pip/
Couldn't find index page for 'pip' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading https://pypi.python.org/simple/
No local packages or download links found for pip
error: Could not find suitable distribution for Requirement.parse('pip')
请问遇到这种情况下我应该要怎么办？

Answer 1

1. 重新安装curl的证书:

$ wget http://curl.haxx.se/ca/cacert.pem
$ mv cacert.pem ca-bundle.crt
$ sudo cp ca-bundle.crt /etc/pki/tls/certs/

参考链接:
http://t.csdn.cn/jVZit