formatted string python

1age = 11
2my_self = "My name is Vishnu, I am " + str(age)
3print(my_self)

1# Newer f-string format
2name = "Foo"
3age = 12
4print(f"Hello, My name is {name} and I'm {age} years old.")
5# output :
6# Hello, my name is Foo and I'm 12 years old.

1string_a = "Hello"
2string_b = "Cena"
3
4# Index based:
5print("{0}, John {1}"
6      .format(string_a, string_b))
7# Object based:
8print("{greeting}, John {last_name}"
9      .format(greeting=string_a, last_name=string_b))
10

1print("My name is {0} and I am {1} years old".format(name, age))

1name = "Rick"
2age = 42
3print(f"My name is {name} and I am {age} years old")

1>>> f'Hello, {name}!'
2'Hello, Bob!'
3