Hi, If I want to put a dictionary in a dictionary, does the syntax for assigning and getting at the stuff in the inner dictionary look something like this: outer_dictionary[inner_dictionary][key] = 'value' > ?
If inner_dictionary is the key to outer_dictionary, then that is right. For example,
Create the outer dict:
>>> outer = {}Create an inner dict:
>>> outer['outerkey'] = {}Add a key/value pair to the inner dict
>>> outer['outerkey']['innerkey'] = 'myvalue'
>>> outer
{'outerkey': {'innerkey': 'myvalue'}}Retrieve the inner dict:
>>> outer['outerkey']
{'innerkey': 'myvalue'}Retrieve an entry from the inner dict: >>> outer['outerkey']['innerkey'] 'myvalue'
setdefault() is handy here because you may not know if the inner dict has been created yet when you want to add an entry. If not, setdefault will do it for you:
>>> outer.setdefault('outerkey2', {})['innerkey2'] = 'anotherValue'
>>> outer
{'outerkey2': {'innerkey2': 'anotherValue'}, 'outerkey': {'innerkey': 'myvalue'}}
If the inner dict is there already setdefault will use it:
>>> outer.setdefault('outerkey2', {})['innerkey3'] = 'yetAnotherValue'
>>> outer
{'outerkey2': {'innerkey2': 'anotherValue', 'innerkey3': 'yetAnotherValue'}, 'outerkey': {'innerkey': 'myvalue'}}
Kent
Thanks.
Jim
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