Common Methods for operating the dictionary type in python (recommended) and for operating the dictionary type in python
The has_key () method can check whether the dictionary contains the specified key. If yes, True is returned. Otherwise, False is returned.
Syntax format:
dictionary_name.has_key(key) dict1 = {'01':'yangry','02':'weild','03':'hexh','04':'huangmg'}print dict1.has_key('02')print dict1.has_key('08') #resultTrueFalse
2. clear () method
Used to clear all the items in the dictionary without returning values.
Usage:
dictionary_name.clear()
3. copy method
The copy () method returns a new dictionary with the same key-value pairs in the following format:
dictionary_targetname = dictionary_sourcenme.copy()
4, fromkeys () method
Use the given key to create a new dictionary. The value corresponding to each key value is None.
dictionary_name.fromkeys([key1,key2,...],(default_value))
5. update () method
Format:
update_dictionary.update(source_dictionary) mydict1 = {'1':'yy11','2':'yy22','3':'yy33'}newdict = {'2':'success'} mydict1.update(newdict)print mydict1 #result{'1': 'yy11', '3': 'yy33', '2': 'success'}
The above commonly used method (recommended) for operating the dictionary type in python is all the content shared by the editor. I hope to give you a reference and support for the help house.