python string format

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

string_a = "Hello"
string_b = "Cena"

# Index based:
print("{0}, John {1}"
      .format(string_a, string_b))
# Object based:
print("{greeting}, John {last_name}"
      .format(greeting=string_a, last_name=string_b))

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

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

    txt1 = "My 
    name is {fname}, I'am {age}".format(fname = "John", age = 36)
txt2 = "My 
    name is {0}, I'am {1}".format("John",36)
txt3 = "My 
    name is {}, I'am {}".format("John",36) 

# Basic syntax:
print(f"string {adjustable_input_1} more string {adjustable_input_2}")

# Example usage:
name = "Joe Bob"
age = 23
print(f"My name is {name} and I am {age} years old")
--> My name is Joe Bob and I am 23 years old

'{} {}'.format('one', 'two')