How to get the variable names from the string for the format() method

Question

Lets say I have this line:

\"My name is {name}\".format(name=\"qwerty\")

I know that the variable name is name and so I can f

Answer 1

Or an alternative is to use a function:

def format_string(name):
    return "My name is {name}".format(name="qwerty")

Then call it:

format_string("whatever")