Accessing value inside nested dictionaries [duplicate]

I am new to python and need help in solving an issue:

I have a dictionary like

tmpDict = {'ONE':{'TWO':{'THREE':10}}}

Do we have any other way to access THREE's value other than doing

tmpDict['ONE']['TWO']['THREE']

?

Solution 1:

As always in python, there are of course several ways to do it, but there is one obvious way to do it.

tmpdict["ONE"]["TWO"]["THREE"] is the obvious way to do it.

When that does not fit well with your algorithm, that may be a hint that your structure is not the best for the problem.

If you just want to just save you repetative typing, you can of course alias a subset of the dict:

>>> two_dict = tmpdict['ONE']['TWO'] # now you can just write two_dict for tmpdict['ONE']['TWO']
>>> two_dict["spam"] = 23
>>> tmpdict
{'ONE': {'TWO': {'THREE': 10, 'spam': 23}}}

Solution 2:

You can use the get() on each dict. Make sure that you have added the None check for each access.