python 示例

字典update()方法 (Dictionary update() Method)

update() method is used to update the dictionary by inserting new items to the dictionary.

update()方法用于通过将新项目插入字典来更新字典。

Syntax:

句法：

dictionary_name.setdefault(iterable)

Parameter(s):

参数：

• iterable – It represents an iterbale object or a dictionary to be inserted in the dictionary.

  可迭代 –表示要在字典中插入的iterbale对象或字典。

Return value:

返回值：

It returning nothing.

它什么也没返回。

Example:

例：

# Python Dictionary update() Method with Example# dictionary declarationstudent = {
     "roll_no": 101,  "name": "Shivang",  "course": "B.Tech",  "perc" : 98.5}# printing dictionaryprint("data of student dictionary...")print(student)# inserting an itemstudent.update({
   'city' : 'Indore'})# printing dictionary after update()print("data of student dictionary after update()...")print(student)# inserting multiple itemsstudent.update({
   'city' : 'Indore', 'address' : 'Tech park'})# printing dictionary after update()print("data of student dictionary after update()...")print(student)

Output

输出量

data of student dictionary...{'roll_no': 101, 'name': 'Shivang', 'course': 'B.Tech', 'perc': 98.5}data of student dictionary after update()...{'roll_no': 101, 'name': 'Shivang', 'course': 'B.Tech', 'perc': 98.5, 'city': 'Indore'}data of student dictionary after update()...{'roll_no': 101, 'name': 'Shivang', 'course': 'B.Tech', 'perc': 98.5, 'city': 'Indore', 'address': 'Tech park'}

翻译自:

python 示例