Python String | format_map()

format_map() function is an inbuilt function in Python, which is used to return an dictionary key’s value.

Syntax :

string.format_map(z)

Here z is a variable in which input dictionary is stored and string is the key of the input dictionary.



Parameters : 

input_dict : Takes a single parameter which is input dictionary.

Returns :

Returns key's values of the input dictionary.

 
Code #1 :

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# input stored in variable a.
a = {'x':'John', 'y':'Wick'}
  
# Use of format_map() function
print("{x}'s last name is {y}".format_map(a))

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Output:


John's last name is Wick



 

Code #2 :











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# input stored in variable a. 


a = {'x':"geeksforgeeks", 'y':'b'} 


  


# Use of format_map() function 


print('{x} {y}'.format_map(a)) 



















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Output :


geeksforgeeks b



 

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# Input dictionary 


profession = { 'name':['Barry', 'Bruce'], 


               'profession':['Engineer', 'Doctor'], 


               'age':[30, 31] } 


                       


# Use of format_map() function  


print('{name[0]} is an {profession[0]} and he'


      ' is {age[0]} years old.'.format_map(profession)) 


        


print('{name[1]} is an {profession[1]} and he'


      ' is {age[1]} years old.'.format_map(profession)) 



















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Output :


Barry is an Engineer and he is 30 years old.
Bruce is an Doctor and he is 31 years old.


 

Application :

The format_map() function can be used in many practical application.











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# Python code showing practical  


# use of format_map() function 


def chk_msg(n): 


          


    # input stored in variable a. 


    a = {'name':"George", 'mesg':n} 


      


    # use of format_map() function  


    print('{name} has {mesg} new messages'.format_map(a)) 


      


  


chk_msg(10) 



















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Output :


George has 10 new messages




          
          
          
          

            

    

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