一个基本的 Python 编程挑战

3
6
-1

## Note: This program has been modified a bit for
## GeeksForGeeks article
import random,operator
print ('===========================================')

def randomCalc(i,j):
    ops = {'+':operator.add,
          '-':operator.sub,
          '*':operator.mul,
          '/':operator.truediv }
    num = [1,2,3,4]
    num1,num2 = num[i],num[j]
    op = (list(ops.keys()))[i]
    answer = round(ops.get(op)(num1,num2),3)
    print('What is {} {} {}?\n'.format(num1, op, num2))
    return answer

def askQuestion(i):
    answer = randomCalc(i,i+1)
    guess = float(input())
    return guess == answer,answer

def quiz(numOfQues):
    print('\nWelcome. This is a '+str(numOfQues)+' question math quiz.')
    print('Your answer should be correct to three decimal places.\n')
    score = 0
    for i in range(numOfQues):
        correct,ans = askQuestion(i)
        if correct:
            score += 1
            print('Correct!\n')
        else:
            print('Incorrect! The correct answer is ' + str(ans)+'\n')
    return ('Your score was {}/'+str(numOfQues)).format(score)

# Driver Code
print (quiz(3))

===========================================

Welcome. This is a 3 question math quiz
 Your answer should be correct to three decimal places.

What is 1 + 2?

Correct!

What is 2 * 3?

Correct!

What is 3 - 4?

Correct!

Your score was 3/3