ython修改字符串的内容

有一个sid,name,age;1,amy,20;2,bob,40;3,candy,;4,danny,40;5,emily,10的txt文档，怎么样可以打印出以下结果

with open(r'test.txt', 'r') as t:
    content = t.read()
    keys = content.split(';')[0].split(',')
    for part in content.split(';')[1:]:
        for key, value in zip(keys, part.split(',')):
            print(f'{key}={value}')
        print('-------')