π Rotate Multiple Variables in Python Using Just One Line — Here’s How
If you’ve ever tried swapping variables in Python, you probably used something like this:
temp = a
a = b
b = c
c = temp
Or maybe a slightly cleaner two-variable swap:
a, b = b, a
But what if I told you that you can rotate three or more variables in just a single line? No loops. No temporary variables. Just pure Pythonic elegance.
✅ The Trick: Tuple Unpacking
a, b, c = 1, 2, 3
a, b, c = c, a, b
After executing that, a = 3, b = 1, and c = 2. You've rotated the values clockwise! π
π§ How Does It Work?
In Python, the expression on the right-hand side is evaluated as a tuple:
(c, a, b)
Then Python unpacks it into the variables on the left-hand side:
a, b, c
This all happens in a single step, so there’s no need for temporary storage like in most other languages.
πͺ Why Is This Useful?
- ✅ Cleaner syntax
- ✅ No need for temp variables
- ✅ Reduces chances of bugs
- ✅ Makes your code look modern and Pythonic
⚠️ Bonus Tip
You can extend this logic to any number of variables:
a, b, c, d = d, a, b, c
Just make sure the number of variables on both sides matches.
π Final Thoughts
Tuple unpacking isn’t just a neat syntax—it’s a powerful feature of Python that lets you write cleaner, more maintainable code.
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