Doubt about Python List

Question

I have these lists:

data_list_com_todos_os_dados = [x for x in queryset_data if x not in data_list_all]

data_list_ que conta_repetições = { y:data_list_3.count(y) for y in set(data_list_3)} 

that returns me this result:

{'2019-06-08': 2, '2019-06-06': 2, '2019-06-10': 2, '2019-06-03': 1, '2019-06-02': 2, '2019-06-04': 1}

is the result I was hoping for.

I’m using python3 and django2 to create graphs, but I’m having a hard time getting only the value of the items to put them in another or the same list keeping the positions, because then JSON can render the data and generate the graph.

I think the list I created has 3 positions: [index,valor:quantidade_de_vezes_que_se_repete] and I’m not getting just the quantidade_de_vezes_que_se_repete. I read and researched a little but I could not resolve my doubt.

Answer 1

What you have created is not a list, it is a dictionary. A dictionary is a map that relates the key/value pair. In your case the dates are the keys and the number of times that is repeated are the values.

As you just want a list of values, just do data_list.values(). This will return a view Object, which is an eternal object. If you really need a list you can do:

data_values = list(data_list.values())

Note: recommend changing the name data_list since the structure is not a list. It makes no difference in the execution of the code, but leaves more readable.