F-strings, introduced in Python 3.6, provide a fast and readable way to embed expressions inside string literals. They simplify string formatting and make your code cleaner and more maintainable.
How It Works:
- F-strings are created by prefixing a string with the letter f or F.
- Expressions inside curly braces {} are evaluated at runtime and embedded into the string.
Why It's Cool:
- Readability: Embeds expressions directly within the string, making it easier to read and write.
- Efficiency: Faster than the older % formatting and str.format() methods.
- Flexibility: Supports any valid Python expression within the curly braces.
Best Practices:
- Use f-strings for all new code as they are the most readable and efficient way to format strings.
- Use expressions inside f-strings for calculations, function calls, and more, directly in the string context.
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