We have very powerful method str.format() in python through which you can do variable substitutions and value formatting.
Let’s understand the usage of format with couple of examples.

Formatters work by putting in one or more replacement fields and placeholders defined by a pair of curly braces { } into a string and calling the str.format(). The value we want to put into the placeholders and concatenate with the string passed as parameters into the format function.

format() method takes any number of parameters. But, is divided into two types of parameters:
Positional parameters – list of parameters that can be accessed with index of parameter inside curly braces {index} ,See the example below.

Keyword parameters – list of parameters of type key=value, that can be accessed with key of parameter inside curly braces {key}
See the example :

we have another method of formatting string literals , as shown below:

You could also call functions as shown below:

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