Default dictionaries are a nice way to ensure even if a dictionary element is not yet in the dictionary, we can assume a default value for it. This gets rid of the need to check keys for existence before doing operations. Learn more on FinanceAndPython.com! #DataScience

FinancePython's tweet image. Default dictionaries are a nice way to ensure even if a dictionary element is not yet in the dictionary, we can assume a default value for it. This gets rid of the need to check keys for existence before doing operations. Learn more on FinanceAndPython.com! #DataScience

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