Best way to create multiple list from a dictionary

Question

What is the best way to create multiple list from a dictionary? My dictionary looks like this:

mydict = {'aaa': ['111', '222', '333'], 'bbb': ['444', '555']}

I'm trying to make lists like this:

aaa ['111', '222', '333']
bbb ['444', '555']
...

I've tried

result = []
For key, value in mydict.item()
    result[key].append(value)

This returns a type error.

Answer 1

This is as close as you could get to what you would want, the issue in your code is the way you're initializing the result list and accessing its elements. You can get what you would want is by using a loop to iterate through the dictionary items. The list would then be populated with tuples that would have the key and value pair from your dictionary, then you want to loop through result to print your output.

mydict = {'aaa': ['111', '222', '333'], 'bbb': ['444', '555']}
result = []

for key, value in mydict.items():
    result.append((key, value))

# Printing the result
for key, value in result:
    print(key, value)

Output:

aaa ['111', '222', '333']
bbb ['444', '555']

Answer 2

Turning the dictionary keys into variables is possible but not something that you would want to do in a real program:

>>> globals().update(mydict)
>>> aaa
['111', '222', '333']
>>> bbb
['444', '555']

If you only want the printed output to look like that, then use a for loop to print:

for i in mydict.items(): print(*i)

aaa ['111', '222', '333']
bbb ['444', '555']

If you want to manipulate the lists by name, you could create a dictionary subclass that processes its keys as attribute names:

class fieldDict(dict):
    __getattr__ = dict.get
    __setattr__ = dict.__setitem__

lists = fieldDict(mydict)

lists.aaa   # ['111', '222', '333']  
lists.bbb   # ['444', '555']