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In Python, the get() method is used to retrieve the value associated with a specified key from a dictionary. If the key is not found, it returns None by default, or a specified default value if provided1.
Example
scores = {'Math': 90, 'Science': 85}print(scores.get('Math')) # Output: 90print(scores.get('Art', 'Not Found')) # Output: Not FoundUsage
The get() method is particularly useful when you are unsure if a key exists in the dictionary and want to avoid raising a KeyError. It allows for safer access to dictionary values2.
Syntax
dictionary.get(key[, default])key: The key for which you want to retrieve the value.
default: (Optional) A value to return if the specified key does not exist. If not provided, None is returned.
Time Complexity
The time complexity of the get() method is O(1), as dictionary operations in Python are designed to be very efficient3.
Considerations
When using get(), remember that it will not modify the dictionary. If you need to update the dictionary with a default value when a key is missing, you'll need to use a different approach.
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