用python带分数和分数

发布网友发布时间：2022-05-10 23:46

共2个回答

热心网友时间：2022-05-11 01:15

#!/usr/bin/env python3
from random import randint, choice

def mm(m, n):
    """求两个整数的最小公倍数"""
    if m > n:
        m, n = n, m
    if m == n or m == 1 or n % m == 0:
        return n
    for i in range(2, n+1):
        if m * i % n == 0:
            return m * i


def mn(m, n):
    """求两个整数的最小公约数"""
    if m > n:
        m, n = n, m
    if m == n or m == 1 or n % m == 0:
        return m
    r = 1
    for i in range(2, m):
        if m % i == 0 and n % i  == 0:
            r = i
    return r

def rd(t=3):
    """随机生成一个分数"""
    w = randint(1, 9)
    d = randint(2, 9)
    n = randint(1, d-1)
    m = mn(d, n)
    return [w, n//m, d//m]

def show(a):
    """[1, 1, 2] --> '1 1/2'"""
    return '{} {}/{}'.format(*a)

def imp(a):
    """1 1/2 --> 3/2"""
    return [a[0]*a[2]+(a[0]//abs(a[0]))*a[1], a[2]]

def unimp(a):
    """3/2 --> 1 1/2"""
    m = mn(abs(a[0]), a[1])
    n, d = a[0] // m, a[1] // m
    return (n//abs(n))*(abs(n) // d), abs(n) % d, d

def add(a, b, negative=False):
    a, b = imp(a), imp(b)
    m = mm(a[1], b[1])
    sign = -1 if negative else 1
    r = a[0] * m // a[1] + sign * b[0] * m // b[1], m
    return unimp(r)

def main():
    right = 0
    for i in range(20):
        print('Question {}:'.format(i+1))
        a, s, b = rd(), choice(('+', '-')), rd()
        result = show(add(a, b, s=='-'))
        inp = input('{} {} {} = '.format(show(a), s, show(b))).strip()
        if inp == result or inp == result.lstrip('0 '):
            right += 1
            print('Right.')
        else:
            print('Wrong!The correct result is: {}'.format(result.lstrip('0 ')))
    print('Test complete. Right: {}, wrong: {}, Rate: {}%'.format(
        right, 20-right, right*5))

if __name__ == '__main__':
    main()