Python自动生成100以内加减乘除混合运算题

import random
from random import choice ops = ('＋','－','×','÷') ans = [] i=0 while i < 100 : op1 = choice(ops) op2 = choice(ops) n = random.randint(1,9) if op1 == '＋' and op2 == '＋' : a = random.randint(0,100) b = random.randint(0,100-a) c = random.randint(0,100-a-b) ans.append(a + b + c) elif op1 == '＋' and op2 == '－' : a = random.randint(0,100) b = random.randint(0,100-a) c = random.randint(0,a+b) ans.append(a + b - c) elif op1 == '＋' and op2 == '×' : b = random.randint(0,9) c = random.randint(0,9) a = random.randint(0, 100 - b * c) ans.append(a + b * c) elif op1 == '＋' and op2 == '÷': c = random.randint(1, 9) b = n * c a = random.randint(0, 100 - b / c) ans.append(a + b / c) elif op1 == '－' and op2 == '＋' : a = random.randint(0,100) b = random.randint(0,a) c = random.randint(0,100-a+b) ans.append(a - b + c) elif op1 == '－' and op2 == '－' : a = random.randint(0,100) b = random.randint(0,a) c = random.randint(0,a-b) ans.append(a - b - c) elif op1 == '－' and op2 == '×' : b = random.randint(0,9) c = random.randint(0,9) a = random.randint(b*c,100) ans.append(a - b * c) elif op1 == '－' and op2 == '÷': c = random.randint(1, 9) b = n * c a = random.randint(100 - b / c,100) ans.append(a - b / c) elif op1 == '×' and op2 == '＋' : a = random.randint(0, 9) b = random.randint(0, 9) c = random.randint(0,100-a*b) ans..append(a * b + c) elif op1 == '×' and op2 == '－' : a = random.randint(0,9) b = random.randint(0,9) c = random.randint(0,a*b) ans.append(a * b - c) elif op1 == '÷' and op2 == '＋' : b = random.randint(1, 9) a = n * b c = random.randint(0,100 - a / b) ans.append(a / b + c) elif op1 == '÷' and op2 == '－' : b = random.randint(1,9) a = n * b c = random.randint(0,a / b) ans.append(a / b - c) else : continue print("第%s题： %s%s%s%s%s=" % (i + 1, a, op1, b, op2, c)) i += 1 print("*"*60) i = 0 while i < len(ans): print("第%s题的答案是：%d"%(i+1,ans[i])) i += 1