Add key-value pairs
##First define an empty dictionary (recommended Learn: Python video tutorial)
>>> dic={}Directly assign a value to a key that does not exist in the dictionary to add
>>> dic['name']='zhangsan'
>>> dic
{'name': 'zhangsan'}If the key or This method can also be used if value is a variable
>>> key='age'
>>> value=30
>>> dic[key]=value
>>> dic
{'age': 30, 'name': 'zhangsan'}You can also use the setdefault method of the dictionary
>>> dic.setdefault('sex','male')
'male'
>>> key='id'
>>> value='001'
>>> dic.setdefault(key,value)
'001'
>>> dic
{'id': '001', 'age': 30, 'name': 'zhangsan', 'sex': 'male'}The above is the detailed content of How to add key-value pairs in python dictionary. For more information, please follow other related articles on the PHP Chinese website!
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
