Python Dictionary | get method
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Python's Dictionary.get(~) method returns the value for the specified key in a dictionary.
Parameters
1. key | any type
The key to be searched in the dictionary.
2. value | any type | optional
The value to be returned if the key is not found. Default is None.
Return Value
If key exists in dictionary: the value for the key.
If key does not exist in dictionary and no value is specified in input: None.
If key does not exist in dictionary and value is specified in input: specified value.
Examples
Basic usage
When the key exists in dictionary:
cars = {'Toyota': 'Green', 'Nissan':'Yellow', 'Honda':'Blue'}cars.get('Nissan')
'Yellow'
When the key does not exist in dictionary and no value is specified in input:
cars = {'Toyota': 'Green', 'Nissan':'Yellow', 'Honda':'Blue'}print(cars.get('Renault'))
None
When the key does not exist in dictionary and value is specified in input:
cars = {'Toyota': 'Green', 'Nissan':'Yellow', 'Honda':'Blue'}cars.get('Renault','Other')
'Other'
Difference between Dictionary.get(~) method and dict[key]
The Dictionary.get() method returns a default value if the key is missing.
cars = {'Toyota': 'Green', 'Nissan':'Yellow', 'Honda':'Blue'}print(cars.get('Renault'))
None
If key is missing when using dict[key], KeyError exception is raised.
cars = {'Toyota': 'Green', 'Nissan':'Yellow', 'Honda':'Blue'}cars['Renault']
KeyError: 'Renault'
