How python uses the update function
This article mainly introduces python how to use the update function, the article is very detailed, has a certain reference value, interested friends must read it!
The built-in function update of the dictionary
The function of the update function: add a new dictionary. If the new dictionary has the same key as the original dictionary, the value of the key will be overwritten by the value of the new dictionary.
Usage of the update function: dict.update (new_dict), which has no return value; new_dict is the new dictionary
Examples are as follows:
Default_dict = {} new_dict = {'name':' Neo'} default_dict.update (new_dict) print (default_dict) # the execution result is as follows: # > {'name':' Neo'} user = {'name':' Neo', 'age': 18,' birthday': '2000-01-01'} user_jack = {'name':' Jack', 'age': 17,' birthday': '2001-12-12' The execution result of 'sex':' man'} user.update (user_jack) print (user) # is as follows: # > > {'name':' Jack', 'age': 17,' birthday': '2001-12-12,' sex': 'man'} above are all the contents of the article "how python uses update functions" Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!
