Here is how to choose the best string formatting: % vs. format vs. f-string literal in Python.

name = "Alice"
age = 25
print("My name is %s and I am %d years old." % (name, age)) 

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2- The .format() method: The .format() method provides a more flexible way to format strings. It uses curly braces {} as placeholders and allows for positional or keyword arguments.

Example:

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

3. The f-string literals: f-string literals are a more recent addition to Python (introduced in Python 3.6). They offer a concise and readable way to format strings by prefixing the string with an 'f' character and using curly braces {} to enclose expressions.

Example:

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

All three methods are valid and have their own advantages. f-string literals are generally preferred for their simplicity, readability, and ability to include expressions directly within the string.

However, the choice of string formatting method depends on personal preference and the specific requirements of your project or codebase.