little_student_quiz.py

#!/usr/bin/env python
# coding=utf-8

import random
import sys

def get_quiz(num=10, inf=0, sup=20):
    quiz = []
    while len(quiz) < num:
        r = random.random()
        x = random.randint(inf, sup)
        y = random.randint(inf, sup)
        if r < 0.25:
            q = str(x) + ' + ' + str(y)
        elif r < 0.5:
            if x < y: x, y = y, x
            q = str(x) + ' - ' + str(y)
        elif r < 0.75:
            q = str(x) + ' x ' + str(y)
        else:
            q = str(x * y) + ' / ' + str(y)
        quiz.append(q)
    return quiz


if __name__ == '__main__':
    if len(sys.argv) == 2:
        quiz = get_quiz(int(sys.argv[1]))
    else:
        quiz = get_quiz()
    for q in quiz:
        print "{}:\t{}".format(quiz.index(q) + 1, q)