Python Programming

Summary

  1. Loops in Python are tools that let you repeat a set of instructions multiple times, automating repetitive tasks.
  2. The two main types of loops in Python are for loops and while
  3. A for loop iterates over a sequence (like a list, tuple, dictionary, set, or string) and executes a block of code for each item.
  4. For loops in Python abstract away the counter and directly iterate over items, making code cleaner and more readable.
  5. Using a for loop in Python is efficient, readable, and versatile, working with any iterable.
  6. Strings in Python are iterable objects, allowing you to loop through each character in the string using a for loop.
  7. The break statement allows you to exit the loop immediately when a specified condition is met.
  8. The continue statement allows you to skip the rest of the code inside the current iteration and move to the next iteration.
  9. The range() function returns a sequence of numbers, which can be customized with start, stop, and step values for iteration.
  10. The else keyword in a for loop executes a block of code once the loop has finished iterating over all items, unless interrupted by a break statement.
  11. Nested loops involve having one loop inside another, allowing complex iterations such as printing each color with every size.
  12. A while loop repeats a block of code as long as a condition is true, useful when the number of iterations is not known beforehand.
  13. The break statement in a while loop exits the loop immediately when a specified condition is met.
  14. The continue statement in a while loop skips the rest of the code in the current iteration and moves to the next iteration.
  15. Infinite loops continue running indefinitely because the terminating condition is never met, which can be useful but often unintended.
Last updated: April 22, 2025