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Python Please, help. I need generate dictionary list

Qubik

New Coder
I have 2 lists. For example
list_1 = ["a", "b", "c", "d"]
list_2 = ["A", "B", "C", "D"]

It should turn out:
total_list = [{"lower": "a", "upper":"A"}, {"lower": "b", "upper":"B"}, {"lower": "c", "upper":"C"}, {"lower": "d", "upper":"C"}].

I tried like this
list_data_dict = [{"lower": a_lower, "upper": a_upper} for a_lower in list_1 for a_upper in list_2]
But it turns out not right
 
I have 2 lists. For example
list_1 = ["a", "b", "c", "d"]
list_2 = ["A", "B", "C", "D"]

It should turn out:
total_list = [{"lower": "a", "upper":"A"}, {"lower": "b", "upper":"B"}, {"lower": "c", "upper":"C"}, {"lower": "d", "upper":"C"}].

I tried like this
list_data_dict = [{"lower": a_lower, "upper": a_upper} for a_lower in list_1 for a_upper in list_2]
But it turns out not right
[CODE lang="python" title="Code"]list_1 = ["a", "b", "c", "d"]
list_2 = ["A", "B", "C", "D"]
mydict = {}

for key in list_1:
for value in list_2:
mydict[key] = value
break
print(mydict) [/CODE]
 

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