Question: rpi how to install pip?
Answer: To install PIP: PIP for python2 - sudo apt-get install python-pip PIP for python3 - sudo apt-get install python3-pip. ... 
To install python3: Python2 is available with Raspbian OS. ... 
To install OpenCV in Raspberry Pi for python3 in single command: ... 
To use MQTT Protocol in Raspberry Pi: ... 
Tkinter: ... 
pyQT4:﻿