Скачать или смотреть How to Skip Multiple Iterations in a Python For Loop

Learn how to easily skip two or more iterations in a Python for loop using built-in functions like `iter()` and `next()`!
---
This video is based on the question https://stackoverflow.com/q/64247467/ asked by the user 'Karan' ( https://stackoverflow.com/u/14229039/ ) and on the answer https://stackoverflow.com/a/64247761/ provided by the user 'Sakeru' ( https://stackoverflow.com/u/10730440/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Skip two or more than two iterations in a for loop

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Mastering the For Loop: Skipping Multiple Iterations in Python

In programming, particularly in Python, there are times when you might want to bypass certain iterations of a loop based on specific conditions. While it's straightforward to skip a single iteration using the continue statement, skipping two or more iterations requires a different approach. In this guide, we'll explore a clever solution to this problem using built-in Python functions.

The Problem: Skipping Specific Iterations

Let's say you have a list of numbers, and you wish to print them out while skipping certain numbers, specifically 237, 360, 263, and 980. Normally, you might think to use a for loop combined with the continue statement to achieve this. However, continue only allows you to skip the current iteration—not the next one(s) that follow.

Example Scenario

Here's a snippet of the initial code you might be working with:

[[See Video to Reveal this Text or Code Snippet]]

In this example, while 237 would be skipped, the subsequent numbers (360, 263, and 980) would still be printed.

The Solution: Using iter() and next()

To effectively skip multiple iterations, we can leverage Python's built-in iter() function along with next(). This method enables you to create an iterator from your list and control the flow of iterations directly.

Steps to Implement the Solution

Create a List of Numbers to Skip: You can define a list containing all the numbers you want to skip.

Create an Iterator: Use the iter() function to create an iterator from your original list.

Use a For Loop with Conditions: In your loop, check if the current number is in your skip list. If it is, call next() to advance the iterator, effectively skipping the next number.

Print Numbers: If the current number isn't in the skip list, print it out.

Implementation

Here's how you can put this all together in code:

[[See Video to Reveal this Text or Code Snippet]]

Breakdown of the Code

Define the Skip List:

[[See Video to Reveal this Text or Code Snippet]]

Create an Iterator:

[[See Video to Reveal this Text or Code Snippet]]

Main Loop:
In the loop, we check if the number is in numbers_to_skip. If true, next(numbers_iter) skips the next item and we continue to the next iteration.

Print Remaining Numbers: Any number not on the skip list gets printed.

Conclusion

By using iter() and next(), you can effectively skip multiple iterations in a for loop without complicating your code. This technique not only simplifies your logic but also improves readability. Try implementing this method in your own projects and see how it can streamline your code execution when dealing with lists!

Feel free to reach out if you have further questions or comments on skipping iterations in Python—happy coding!