1 #Author : Kelvin 2 #Date : 2019/1/17 15:27 3 4 #字典的update方法，是向调用者字典中添加另外一个字典 5 dict1 = {"name":"kelvin", "age": 22} 6 dict2 = {"sex":"male"} 7 dict1.update(dict2) 8 print(dict1) 9 #>>>: {'name': 'kelvin', 'age': 22, 'sex': 'male'} 10 11 12 #字典的fromkeys方法 13 list1=["kelvin","bob","jam"] 14 new_dict1=dict.fromkeys(list1,"good") 15 print(new_dict1) 16 #>>>: {'kelvin': 'good', 'bob': 'good', 'jam': 'good'} 17 new_dict2=dict.fromkeys(list1) 18 print(new_dict2) 19 #>>>: {{'kelvin': None, 'bob': None, 'jam': None}