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How get() works in Python
Hassan Ahmed
The in-built get() method in Python returns the value of a specific key in a dictionary.
Syntax
dict.get(key, value)
Parameters and return values
The get() method requires the key parameter to return its value.
The value parameter is optional. It is passed to return a value if the mentioned key does not exist.
-
If the specified
keydoes exist, its value is returned. -
Noneis returned if the mentionedkeydoes not exist and the value is not specified. -
Valueis returned if the mentionedkeydoes not exist and the value is specified.
Code
Example 1
postcodes = dict({'griffith':2603, 'belconnen':2617, 'phillip':2606})
griffith_code = postcodes.get("griffith")
print("The postcode of Griffith is:", griffith_code)Example 2
#None is returned when specified key does not exist and value is also not passed in method.
postcodes = dict({'griffith':2603, 'belconnen':2617, 'phillip':2606})
civic_code = postcodes.get('civic')
print(civic_code)Example 3
#If specified key does not exist, value is returned.
postcodes = dict({'griffith':2603, 'belconnen':2617, 'phillip':2606})
civic_code = postcodes.get('civic', 2601)
print(civic_code)
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