Python 字典 values() 方法Python 字典方法实例返回值:car = { "brand": "Porsche", "model": "911", "year": 1963}x = car.values()print(x)完整实例:car = { "brand":
Python 字典 update() 方法Python 字典方法实例向字典插入项目:car = { "brand": "Porsche", "model": "911", "year": 1963}car.update({"color": "White"})print(car)完
Python 字典 setdefault() 方法Python 字典方法实例获取 "model" 项的值:car = { "brand": "Porsche", "model": "911", "year": 1963}x = car.setdefault("model", "Maca
Python 字典 popitem() 方法Python 字典方法实例从字典中删除最后一个项目:car = { "brand": "Porsche", "model": "911", "year": 1963}car.popitem()print(car)完整实例
Python 字典 pop() 方法Python 字典方法实例从字典中删除 "model":car = { "brand": "Porsche", "model": "911", "year": 1963}car.pop("model")print(car)完整实例:car =
Python 字典 keys() 方法Python 字典方法实例返回键:car = { "brand": "Porsche", "model": "911", "year": 1963}x = car.keys()print(x)完整实例:car = { "brand": "Por
Python 字典 items() 方法Python 字典方法实例返回字典的键值对:car = { "brand": "Porsche", "model": "911", "year": 1963}x = car.items()print(x)完整实例:car = { "
Python 字典 get() 方法Python 字典方法实例获取 "model" 项的值:car = { "brand": "Porsche", "model": "911", "year": 1963}x = car.get("model")print(x)完整实例:car
Python 字典 fromkeys() 方法Python 字典方法实例创建拥有 3 个键的字典,值均为 0:x = ('key1', 'key2', 'key3')y = 0thisdict = dict.fromkeys(x, y)print(thisdict)完整实
Python 字典 copy() 方法Python 字典方法实例复制 car 字典:car = { "brand": "Porsche", "model": "911", "year": 1963}x = car.copy()print(x)完整实例:car = { "brand
Python 字典 clear() 方法Python 字典方法实例删除 car 列表中的所有元素:car = { "brand": "Porsche", "model": "911", "year": 1963}car.clear()print(car)完整实例:car
Python 字典方法Python 有一组可以在字典上使用的内建方法。方法描述clear()删除字典中的所有元素copy()返回字典的副本fromkeys()返回拥有指定键和值的字典get()返回指定键
Python 字典字典(Dictionary)字典是一个无序、可变和有索引的集合。在 Python 中,字典用花括号编写,拥有键和值。示例代码:创建并打印字典:thisdict = { "brand": "Porsche", "m