落后乞丐

摘要： 运算符 a) 算术运算符 b)关系运算符 True 真，非0，False <=0 假 a = 10 b = 20 b += a b += a c = 100 c -= a print(b) print(c) print(a ==b) print(a<=b) a = 10 b = 20 b += a 阅读全文