Python的collections之namedtuple的使用及其优势

 

类实现：

class User:
    def __init__(self, name, age, height):
        self.name = name
        self.age = age
        self.height = height

user = User(name="baoshan", age=31, height=170)
print(user.name, user.age, user.height)

namedtuple实现

方式1：

from collections import namedtuple

User = namedtuple("User", ["name", "age", "height"])
user = User(name="baoshan", age=31, height=170)
print(user.name, user.age, user.height)

 

方式2：

from collections import namedtuple

User = namedtuple("User", ["name", "age", "height"])
user_tuple = ("baoshan", 31, 170)
user = User(*user_tuple)
print(user.name, user.age, user.height)

 

namedtuple的优势

# namedtuple直接可以创建一个类
# 优势1： 代码简洁
# 优势2： 内存小，效率高 数据处理方面很有优势

user_info_dict = user._asdict()
print(user_info_dict)

# namedtuple可以转换为dict

 

name, age, *others = user
print(name, age, *others)

# namedtuple可以拆包