python新鲜题 老公们 救救孩子

try:    
    a, b = map(int, input("请用空格隔开输入两个整数：").split(" "))

except ValueError as e:    
    print("输入数据有错")
except:
    print("错误强大")
else:    
    print(a+ b)
    
    
    
class TrangleError(Exception):
    def __init__(self, F):
        self.f = F

    def __str__(self):
        if self.f == False:
            return '不满足条件！'
        else:
            return "很好"
        
a , b, c = 20, 40, 50

try:
    if a + b <= c or b + c <= a or a + c < b :    
        raise TrangleError(False)
except TrangleError as e :
    print(e)
else:
    print("很不错")