What are some advanced methods for using a dictionary in programming?
Advanced dictionary methods include merging dictionaries, using comprehensions, and applying default values with defaultdict.
Can you explain how to merge two dictionaries in Python?
In Python, you can merge dictionaries using the update()
method or the |
operator in Python 3.9 and later.
What is a dictionary comprehension?
A dictionary comprehension is a concise way to create dictionaries using a single line of code, often with a for loop.
How does defaultdict work?
defaultdict
is a subclass of the built-in dict
that provides a default value for a nonexistent key, preventing KeyErrors.
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