name = 'Rajesh'
age = 23
fstring = f'My name is {name} and I am {age} years old'
print (fstring)

My name is Rajesh and I am 23 years old

price = 10
quantity = 3
fstring = f'Price: {price} Quantity : {quantity} Total : {price*quantity}'
print (fstring)

Price: 10 Quantity : 3 Total : 30

user = {'name': 'Ramesh', 'age': 23}
fstring = f"My name is {user['name']} and I am {user['age']} years old"
print (fstring)

My name is Ramesh and I am 23 years old

price = 10
quantity = 3
fstring = f"Total : {price*quantity=}"
print (fstring)

Total : price*quantity=30

def total(price, quantity):
   return price*quantity

price = 10
quantity = 3

fstring = f'Price: {price} Quantity : {quantity} Total : {total(price, quantity)}'
print (fstring)

Price: 10 Quantity : 3 Total : 30

name="Rajesh"
age=23
percent=55.50

fstring = f"My name is {name} and I am {age} years old and I have scored {percent:6.3f} percent marks"
print (fstring)

My name is Rajesh and I am 23 years old and I have scored 55.500 percent marks

name='TutorialsPoint'
fstring = f'Welcome To {name:>20} The largest Tutorials Library'
print (fstring)

fstring = f'Welcome To {name:<20} The largest Tutorials Library'
print (fstring)

fstring = f'Welcome To {name:^20} The largest Tutorials Library'
print (fstring)

Welcome To       TutorialsPoint The largest Tutorials Library
Welcome To TutorialsPoint       The largest Tutorials Library
Welcome To    TutorialsPoint    The largest Tutorials Library

num= 20
fstring = f'Hexadecimal : {num:x}'
print (fstring)

fstring = f'Octal :{num:o}'
print (fstring)

fstring = f'Scientific notation : {num:e}'
print (fstring)

Hexadecimal : 14
Octal :24
Scientific notation : 2.000000e+01