Python Dictionary fromkeys() Method

Returns a dictionary from a list of keys and sets them all to the specified value. If the value is omitted, the value all keys are set to is None.

Syntax

Python
dictionary.fromkeys(sequence)
dictionary.fromkeys(sequence, values)

Parameters

ParameterDescription
sequence Required. A sequence of values that will be used as the keys for the dictionary.
values Optional. The values to assign to each key in the new dictionary.

Example

Python
fish = {'guppy', 'zebra', 'betta'}
fishStock = dict.fromkeys(fish, 10)
print(fishStock)

Output

{'zebra': 10, 'betta': 10, 'guppy': 10}