Python String format_map() Method

Last Updated : 05 Aug, 2021

Python String format_map() method is an inbuilt function in Python, which is used to return a dictionary key's value.

Syntax:

string.format_map(z)

Parameters:

Here z is a variable in which the input dictionary is stored and string is the key of the input dictionary. input_dict: Takes a single parameter which is the input dictionary.

Returns:

Returns key's values of the input dictionary.

Example 1: Python String format_map() method

Python3

# 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))

Output:

John's last name is Wick

Example 2:

Python3

# input stored in variable a. a = {'x':"geeksforgeeks", 'y':'b'} # Use of format_map() function print('{x} {y}'.format_map(a))

Output:

geeksforgeeks b

Example 3:

Python3

# 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))

Output:

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

Example 4: Practical Application

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

Python3

# 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)

Output:

George has 10 new messages

String capitalize() Method in Python

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