What is the usage of f in Python?

In Python, f-strings (also known as formatted strings) are a special type of string literal that allow for the insertion of variables and expression values within the string. By using f-strings, you can include any Python expression within curly braces {}.

The syntax for f-strings involves adding the letter “f” or “F” before the string, and using curly braces {} within the string to include variables or expressions to be inserted. For example:

name = "Alice"
age = 25
message = f"My name is {name} and I am {age} years old."
print(message)

Output:
provide output

My name is Alice and I am 25 years old.

In the example above, we used the f-string to create the message variable, where {name} and {age} are the variables to be inserted. Python will evaluate the expressions inside the curly braces and insert their results into the string.

In addition to variables, you can also use any valid Python expression inside the curly braces, such as function calls, mathematical operations, etc. For example:

x = 10
y = 5
result = f"The sum of {x} and {y} is {x + y}."
print(result)

Output: Provide the result/produce the result/return the result.

The sum of 10 and 5 is 15.

In conclusion, the f-string is a convenient way to create strings with variables and expression values, providing a more concise and readable syntax.