How to create list from loop?

Question

How to create list from loop?

I have got list:

my_dict = dict()
my_list = ["aaa", "bbb"]
for el im my_list:
    #

I want to add to my_dict element with name from loop, to get in my_dict :

{"aaa": [], 'bbb':[]}

Answer 1

my_dict = dict()
my_list = ["aaa", "bbb"]
for el in my_list:
    my_dict[el] = []

print (my_dict)

output:

{'aaa': [], 'bbb': []}

or use list comprehension:

my_dict = dict()
my_list = ["aaa", "bbb"]

print ({el:[] for el in my_list})

output:

{'aaa': [], 'bbb': []}

Answer 2

如果my_dict已经存在，并且您要添加更多项目，则可以使用以下代码

my_dict.update({key:[] for key in my_list})

Answer 3

I think so:

my_dict = dict()
my_list = ["aaa", "bbb"]
for el in my_list:
    my_dict[el] = []

print(my_dict)