関連ワード:  python curly braces in format string    python curly brackets in format string    python escape curly braces in format string    python print curly braces in format string    python literal curly brace in format string    python escape curly bracket in format string    use curly braces in format string python    what is curly braces in python    python use curly braces in f string    can you use curly braces in python