this post was submitted on 02 Aug 2025
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Python

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A minor headache for a beginner coder (lemmy.dbzer0.com)
submitted 1 week ago by moosetwin@lemmy.dbzer0.com to c/python@programming.dev
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if var1 equals 1, and you run var2 = var1, that sets var2 to 1.

if list1 equals [1, 2, 3], and you run list2 = list1, that sets list2 to list1

so if you then run var1 = 2, var2 will still be 1

but if you run list1 = [3, 2, 1], list2 will give [3, 2, 1]

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[โ€“] logging_strict@programming.dev 1 points 1 week ago

Other, maybe clearer, way to inspect references

id(a) == id(b)

Then reserve the use of is for bool or None.

Python has a concept of, Just don't do that. Which would be a great title for this topic thread.