a,b,c 中最大的

Question

def greater(a,b):
    if a > b:
        return a
    elif a==b:
        return "equal"
    else:
        return b

def greatest(a,b,c):

    if a>b and a>c:
        return 'a'

    elif a==b and a==c:
        return "equal"

    elif b > a and b > c:
        return b

    elif b==a and b==c:
        return "equal"

    elif c==a and c==b:
        return "equal"

    else:
        return c

bigger = greater(1,1)        
biggest = greatest(bigger,1,1)
print(biggest)


error:Traceback (most recent call last):
  File "functions_execrise2.py", line 30, in <module>
    biggest = greatest(bigger,1,1)
  File "functions_execrise2.py", line 11, in greatest
    if a>=b and a>=c:
TypeError: '>=' not supported between instances of 'str' and 'int'

Answer 1

毫无疑问，但是greater(1,1) 可能返回“equal”，因此您调用了greater("equal",1,1)，导致您将字符串与整数进行比较。