加法生成

import random

for i in range(20):
    while True:
        aa = random.randint(0, 30)
        bb = random.randint(0, 30)

        if aa + bb >= 30:
            continue
        else:
            while True:
                jiego = int(input("%d+%d=" % (aa, bb)))
                cc = aa + bb
                if jiego == cc:
                    print("恭喜你答对了")
                    print("开始下一题")
                    break
                else:
                    print('答错了请重新输入')
                    continue

            # print("%d+%d="%(aa,bb))

        break
print('恭喜你答完了，100分')