将列表合并到字典，但不要删除重复的

def merge_list_to_dict(lst, dct):
    for item in lst:
        if item not in dct:
            dct[item] = None
    return dct

my_list = [1, 2, 3, 4, 2, 5]
my_dict = {'a': 1, 'b': 2}
merged_dict = merge_list_to_dict(my_list, my_dict)
print(merged_dict)

{'a': 1, 'b': 2, 1: None, 2: None, 3: None, 4: None, 5: None}

def merge_list_to_dict(lst, dct):
    new_dict = {item: None for item in lst}
    merged_dict = {**dct, **new_dict}
    return merged_dict