#!/usr/bin/python

import sys

class pyall:
	def __init__(self):
		print("Hello")

	def add(self,a,b):
		return a+b

	def subt(self,a,b):
		return a-b

	def mult(self,a,b):
		return a*b

	def div(self,a,b):
		if b!=0:
			return a/b
		elif b==0:
			return "Divide by zero error."

	def funSumlistAction(self, lists=[]):
		total=0
		for element in lists:
			total=total + int(element)
		return total

	def process(self):
		str=["\n1.Add",
		"2.Subtract",
		"3.Multiplication",
		"4.Division",
		"5.Sum of integer list",
		"6.Type \"quit\" to quit"]

		for name in str:
			print(name)

		sys.stdout.write("Select: ")

		varTakeInput=raw_input()
		if varTakeInput=="quit":
			exit()

		varTakeInteger=int(varTakeInput)
		print(varTakeInput)

		if varTakeInteger==1:
			varRes=self.add(9,5)

		elif varTakeInteger==2:
			varRes=self.subt(9,5)

		elif varTakeInteger==3:
			varRes=self.mult(5,9)

		elif varTakeInteger==4:
			varRes=self.div(4/2)

		elif varTakeInteger==5:
			sys.stdout.write("Enter a list of integer: ")
			varTakeList=[]
			varTakeList=raw_input()
			a=[]
			a=varTakeList.split(',')
			print a
			for x in a:
				x.strip()
			print a

			varRes=self.funSumlistAction(a)

		print("Result: ",varRes)


if __name__ == "__main__":
	obj=pyall()
	while 1>0:
		obj.process()


$python file.py
Hello

1.Add
2.Subtract
3.Multiplication
4.Division
5.Sum of integer list
6.Type "quit" to quit
Select: 5
5
Enter a list of integer: 5, 2, 2
['5', ' 2', ' 2']
['5', ' 2', ' 2']
('Result: ', 9)