求大神解答，最好帮忙写下来，谢谢。

Question

 

Answer 1

def find_max2(given_list):
    max_number = -float('inf')
    for gi in given_list:
        if isinstance(gi, int) and max_number < gi:
            max_number = gi
    print(max_number)
    return max_number
    

given_list=['a',1,34,123,'b',45,-5,153]
find_max2(given_list)