Can you explain what string interpolation means in programming?

String interpolation is a way to insert variable values or expressions into a string literal to form the final string. In Python, from version 3.6 onwards, a convenient form of interpolation called f-strings was introduced, where the letter f is placed before the string, and variables or expressions are indicated inside curly braces.

Example:

name = "Alice"
age = 30
print(f"Hello, {name}! You are {age} years old.")

Output:

Hello, Alice! You are 30 years old.

This is more convenient and readable than concatenation or using the .format() method. Interpolation helps create dynamic strings with data substitution.