类python中的字典

Question

我有一个创建类 (User) 的代码，该类包含两个名为 first_name、last_name 的属性，以及存储在字典 (user_profile) 中的其他几个属性。

现在的问题是，当我从 Class(user) 创建一个实例时，存储在 Dictionary 中的属性没有正确分配到类变量。 代码如下：

class User():
    """ summarize information about a user"""
    def __init__(self, first_name, last_name, **user_profile):
        """initialize the user information like first, last names and others"""

        self.first_name = first_name
        self.last_name = last_name

        # class attributes are stored in a dictionary

        for key, value in user_profile.items():
            self.user_inf = value

# make an instance          
user_prof = User('albert', 'einstein',location = 'princeton', field = 'physics')


print(user_prof.first_name.title() + " " + user_prof.last_name.title() + " " + "used to work in"+ 
   " " + user_prof.user_inf + " " + "at the" + " " + user_prof.user_inf + " " + "department")

结果：

阿尔伯特·爱因斯坦曾在物理系从事物理学工作

预期结果：

阿尔伯特·爱因斯坦曾在普林斯顿物理系工作

如何在实例的正确位置获取字典的值？ 有没有办法以正确的顺序索引字典的值？

Answer 1

您的类构造函数中的for循环将user_profile关键参数中的所有值覆盖到self.user_inf ，因此，关键参数user_profile的最后一个值将是self.user_inf的值，要解决此问题，您可以使用：

class User():
    """ summarize information about a user"""
    def __init__(self, first_name, last_name, **user_profile):
        """initialize the user information like first, last names and others"""

        self.first_name = first_name
        self.last_name = last_name

        # class attributes are stored in a dictionary

        self.user_inf = user_profile
user_prof = User('albert', 'einstein',location = 'princeton', field = 'physics')

print(user_prof.first_name.title() + " " + user_prof.last_name.title() + " " + "used to work in"+ 
   " " + user_prof.user_inf['location'] + " " + "at the" + " " + user_prof.user_inf['field'] + " " + "department")

输出：

Albert Einstein used to work in princeton at the physics department