Python 3 - dictionary fromkeys() Method

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Description

The method fromkeys() creates a new dictionary with keys from seq and values set to value.

Syntax

Following is the syntax for fromkeys() method −

dict.fromkeys(seq[, value]))

Parameters

• seq − This is the list of values which would be used for dictionary keys preparation.

• value − This is optional, if provided then value would be set to this value

Return Value

This method returns the list.

Example

The following example shows the usage of fromkeys() method.

#!/usr/bin/python3

seq = ('name', 'age', 'sex')

dict = dict.fromkeys(seq)
print ("New Dictionary : %s" %  str(dict))

dict = dict.fromkeys(seq, 10)
print ("New Dictionary : %s" %  str(dict))

Result

When we run above program, it produces the following result −

New Dictionary : {'age': None, 'name': None, 'sex': None}
New Dictionary : {'age': 10, 'name': 10, 'sex': 10}