在Python中,字典(Dictionary)是一种无序、可变且可迭代的数据类型,它存储了键值对(key-value pairs)。字典中的每个元素都包含一个键和对应的值。字典以花括号{}表示,键和值之间使用冒号:进行分隔,键值对之间使用逗号,进行分隔。下面是一个简单的字典示例:person={"name":"John","age":25,"city":"bj...
'get', 'items', 'keys', 'pop', 'popitem', 'setdefault', 'update', 'values'] '''clear...
由于学生信息字典中每个学生只有一个键值对,我们可以使用上述的方法来获取年龄。下面是完整的代码示例: students={'Tom':(18,'Male'),'Alice':(19,'Female'),'Bob':(20,'Male')}defget_age(name):ifnameinstudents:age=list(students[name])[0]returnageelse:returnNonename='Tom'age=get_age(name)ifa...
a.fromkeys(seq[, value]) Creates a new dictionary with keys from seq and values set to value (7) a.values() a copy of a's list of values (3) a.get(k[, x]) a[k] if k in a, else x (4) a.setdefault(k[, x]) a[k] if k in a, else x (also setting it) (5) a...
print(dictionary['name']) values.append(dictionary['name']) print(values) # 👉️ ['Alice', 'Borislav', 'Carl'] # --- # ✅ Accessing values in list of dictionaries (using list comprehension) values = [dictionary['name'] for dictionary in list_of_dictionaries...
>>> d1.values() dict_values([0, 1, 2, 3, 4]) #返回的是一个dict_values对象,使用list()将其转化为列表 >>> list(d1.values()) [0, 1, 2, 3, 4] (3)d.items() #获取字典中所有键值对 >>> d1.items() dict_items([('cat', 0), ('dog', 1), ('bird', 2), ('goose'...
The syntax of values() is: dictionary.values() values() Parameters values() method doesn't take any parameters. Return value from values() values() method returns a view object that displays a list of all values in a given dictionary. Example 1: Get all values from the dictionary # rand...
上一篇我们简单认识了数据类型:数字number和字符串string,这篇我们就来隆重介绍一下重量级的数据类型:列表list、字典dictionary和元组tuple。 一、列表List: ①列表是什么? 比如我是小白,在定义变量的时候我们可以写 me = '小白'。妈妈是小白妈妈 mother = '小白妈妈' ,爸爸是小白爸爸 father = '小白爸爸'。针对...
如果有个list:[[1,2,3,4],['a','b','c','d'],['e','f','g','h']],要把它写成dictionary的形式:{1:['a','e'],2:['b','f'],3:['c','g'],4:['d','h']},要怎么写~ 相关知识点: 试题来源: 解析用zip函数就能搞定>>> a=[[1,2,3,4],['a', 'b', 'c', '...
The values() method will return a list of all the values in the dictionary.Example Get a list of the values: x = thisdict.values() Try it Yourself » The list of the values is a view of the dictionary, meaning that any changes done to the dictionary will be reflected in the ...