python2.7找不到pip的问题，找不到pip的异常：

1、

./configure --prefix=/home/me/software/python-2.7.9/myinstall/

2、

make; make install

3、安装完毕，找不到pip

解决方案：

You probably need to use the ensurepip package.
  python -m ensurepip
This will install pip if it is not already there.

出自：http://stackoverflow.com/questions/28751541/where-is-pip-in-python-2-7-9-linux