Python - accessing values nested within dictionaries
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Apologies, this is a very n00b question . . . 

I have a dictionary which contains dictionaries, which may also contain dictionaries, e.g.

    dictionary = {'ID': 0001, 'Name': 'made up name', 'Transactions':
                   {'Transaction Ref': 'a1', 'Transaction Details':
                      {'Bill To': 'abc', 'Ship To': 'def', 'Product': 'Widget A'
                          ...} ...} ... }


Currently I'm unpacking to get the 'Bill To' for ID 001, 'Transaction Ref' a1 as follows:

    if dictionary['ID'] == 001:
        transactions = dictionary['Transactions']
            if transactions['Transaction Ref'] == 'a1':
                transaction_details = transactions['Transaction Details']
                bill_to = transaction_details['Bill To']

I can't help but think this is is a little clunky, especially the last two lines - I feel like something along the lines of the following should work:

    bill_to = transactions['Transaction Details']['Bill To']

Is there a simpler approach for drilling down into nested dictionaries without having to unpack into interim variables?

Thanks!

