So I have a list of characters. And let's say I need to get at each of the characters class types. Using map() in python 3, how exactly would one go about this? Here's the list of characters. I've tried going at this a few ways, but they have all failed. The real issue is that I'm not sure how to get at the nested dictionary.

chars = [{'Character1': {'age': 19, 'name': 'Balthazar', 
    'class': 'Wizard'}}, {'Character2': {'age': 24, 
    'name': 'Thadeus', 'class': 'Warrior'}}]

classes = list(map(lambda x: x.update({"classes": 
    list(map(lambda y: # need to get at each 'class' key 
    here to output to the list of classes), collection)}), 
    chars))

EDIT: This is something I'm working on at work. I'm a Jr. Dev, and these made up dictionaries hold no value to what I'm actually working on whatsoever. I just need to understand how this works and am not coming up with much in my searching.

I am trying to add a list, or a tuple of lists, as the value to a key inside a dictionary. I'm starting with a dictionary that has empty lists as values, and then adding to the value of each key inside a loop like this:

dict = {'key1': [], 'key2': [], 'key3': []}
list = ['a', 'b']
for key,value in dict.items():
#    dict[key].append(list)
    value.append(list)
print(dict)

What is the difference between dict[key].append(list) and value.append(list)? They both produce the same dictionary when the other is commented out.

Further, how would I add a second list to one of these values as a tuple? Something like adding the list ['c', 'd'] to key2, like this:

{'key1': [['a', 'b']], 'key2': [['a', 'b'], ['c', 'd']], 'key3': [['a', 'b']]}

Thanks for any replies!