嗨喽~大家好呀，这里是魔王呐 ❤ ~!

python更多源码/资料/解答/教程等 点击此处跳转文末名片免费获取

创建有序字典

import collectionsdic = collections.OrderedDict()
dic['k1'] = 'v1'
dic['k2'] = 'v2'
dic['k3'] = 'v3'
print(dic)#输出：OrderedDict([('k1', 'v1'), ('k2', 'v2'), ('k3', 'v3')])

clear(清空有序字典)

'''
遇到问题没人解答？小编创建了一个Python学习交流QQ群：926207505
寻找有志同道合的小伙伴，互帮互助,群里还有不错的视频学习教程和PDF电子书！
'''
import collectionsdic = collections.OrderedDict()
dic['k1'] = 'v1'
dic['k2'] = 'v2'
dic.clear()
print(dic)#输出：OrderedDict()

copy(拷贝)

import collectionsdic = collections.OrderedDict()
dic['k1'] = 'v1'
dic['k2'] = 'v2'
new_dic = dic.copy()
print(new_dic)#输出：OrderedDict([('k1', 'v1'), ('k2', 'v2')])

fromkeys(指定一个列表，把列表中的值作为字典的key,生成一个字典)

'''
遇到问题没人解答？小编创建了一个Python学习交流QQ群：926207505
寻找有志同道合的小伙伴，互帮互助,群里还有不错的视频学习教程和PDF电子书！
'''
import collectionsdic = collections.OrderedDict()
name = ['tom','lucy','sam']
print(dic.fromkeys(name))
print(dic.fromkeys(name,20))#输出：OrderedDict([('tom', None), ('lucy', None), ('sam', None)])
#     OrderedDict([('tom', 20), ('lucy', 20), ('sam', 20)])

items(返回由“键值对组成元素“的列表)

import collectionsdic = collections.OrderedDict()
dic['k1'] = 'v1'
dic['k2'] = 'v2'
print(dic.items())#输出：odict_items([('k1', 'v1'), ('k2', 'v2')])

keys(获取字典所有的key)

import collectionsdic = collections.OrderedDict()
dic['k1'] = 'v1'
dic['k2'] = 'v2'
print(dic.keys())# 输出：odict_keys(['k1', 'k2'])

move_to_end(指定一个key，把对应的key-value移到最后)

'''
遇到问题没人解答？小编创建了一个Python学习交流QQ群：926207505
寻找有志同道合的小伙伴，互帮互助,群里还有不错的视频学习教程和PDF电子书！
'''
import collectionsdic = collections.OrderedDict()
dic['k1'] = 'v1'
dic['k2'] = 'v2'
dic['k3'] = 'v3'
dic.move_to_end('k1')
print(dic)# 输出：OrderedDict([('k2', 'v2'), ('k3', 'v3'), ('k1', 'v1')])

pop(获取指定key的value，并在字典中删除)

import collectionsdic = collections.OrderedDict()
dic['k1'] = 'v1'
dic['k2'] = 'v2'
dic['k3'] = 'v3'
k = dic.pop('k2')
print(k,dic)# 输出：v2 OrderedDict([('k1', 'v1'), ('k3', 'v3')])

popitem(按照后进先出原则，删除最后加入的元素，返回key-value)

import collectionsdic = collections.OrderedDict()
dic['k1'] = 'v1'
dic['k2'] = 'v2'
dic['k3'] = 'v3'
print(dic.popitem(),dic)
print(dic.popitem(),dic)# 输出：('k3', 'v3') OrderedDict([('k1', 'v1'), ('k2', 'v2')])
#      ('k2', 'v2') OrderedDict([('k1', 'v1')])

setdefault(获取指定key的value，如果key不存在，则创建)

'''
遇到问题没人解答？小编创建了一个Python学习交流QQ群：926207505
寻找有志同道合的小伙伴，互帮互助,群里还有不错的视频学习教程和PDF电子书！
'''
import collectionsdic = collections.OrderedDict()
dic['k1'] = 'v1'
dic['k2'] = 'v2'
dic['k3'] = 'v3'
val = dic.setdefault('k5')
print(val,dic)# 输出：None OrderedDict([('k1', 'v1'), ('k2', 'v2'), ('k3', 'v3'), ('k5', None)])

values(获取字典所有的value，返回一个列表)

import collectionsdic = collections.OrderedDict()
dic['k1'] = 'v1'
dic['k2'] = 'v2'
dic['k3'] = 'v3'
print(dic.values())# 输出：odict_values(['v1', 'v2', 'v3'])

尾语

最后感谢你观看我的文章呐~本次航班到这里就结束啦 🛬

希望本篇文章有对你带来帮助 🎉，有学习到一点知识~

躲起来的星星🍥也在努力发光，你也要努力加油（让我们一起努力叭）。

最后，宣传一下呀~👇👇👇更多源码、资料、素材、解答、交流皆点击下方名片获取呀👇👇