Python String - format_map() Method

The Python format_map() method returns the formatted version of the given string where the specified values (provided from mapping) are inserted into the string's placeholder. The placeholder is defined using curly brackets: {}.

Syntax

string.format_map(mapping)

Parameters

Return Value

Returns the formatted version of the given string.

Example:

In the example below, format_map() method returns the formatted version of the string called MyString.

mapping = {'name': 'John', 'age': 25}
MyString = "I am {name} and I am {age} years old."
print(MyString.format_map(mapping))

The output of the above code will be:

I am John and I am 25 years old.

Example:

The example below describes the concept of format_map() method in more depth.

mapping = {'name': ['John', 'Marry'], 'age': [25, 22]}

MyString = "I am {name[0]} and I am {age[0]} years old."
print(MyString.format_map(mapping))

MyString = "I am {name[1]} and I am {age[1]} years old."
print(MyString.format_map(mapping))

The output of the above code will be:

I am John and I am 25 years old.
I am Marry and I am 22 years old.