环境：centos7

I installed Python 3.4 on CentOS 7.3:

sudo yum install epel-release
sudo yum install python34.x86_64

There was python 2 installed before under

type python
python is hashed (/bin/python)

So version 3 is under python3:

type python3
python3 is hashed (/bin/python3)

On Windows, I have version 3.5 and the way I install packages is:

python -m pip install <package_name>

So I tried the same on CentOS but calling python3 instead of python:

python3 -m pip install psycopg2
/bin/python3: No module named pip

How do I install or enable pip in Python 3.4 on CentOS so that I can install packages?

使用如下方法解决：

sudo yum install python34-setuptools
sudo easy_install-3.4 pip

参考：https://unix.stackexchange.com/questions/345784/bin-python3-no-module-named-pip