Describe dict.fromkeys( ) with example.

1.	Describe dict.fromkeys( ) with example.
Answer» dict.fromkeys( ) 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 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. #!/user/bin/python seq = {‘name’, ‘age’, ’sex’) diet = dict.from keys(seq) print “New Dictionary : %s” % str(dict) dict = dict.from keys(seq, 10) print “New Dictionary : %s” % str(dict) Let us compile and run the above program, this will produce the following result : New Dictionary : {‘age’ : None, ‘name’ : None, ‘sex’: None} New Dictionary : {‘age’ : 10, ‘name’ : 10, ‘sex’ : 10}

Answer»

dict.fromkeys( )

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 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.

#!/user/bin/python

seq = {‘name’, ‘age’, ’sex’)

diet = dict.from keys(seq)

print “New Dictionary : %s” % str(dict)

dict = dict.from keys(seq, 10)

print “New Dictionary : %s” % str(dict)

Let us compile and run the above program, this will produce the following result :

New Dictionary : {‘age’ : None, ‘name’ : None, ‘sex’: None}

New Dictionary : {‘age’ : 10, ‘name’ : 10, ‘sex’ : 10}

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