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Variables and objects: it's pointers all the way down
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nbpy
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NBPy2025
--room barn 15495 --force
Next: 10 Prompt engineering & social justice: what we know so far
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Marks
Author(s):
Trey Hunner
Location
Reis River Ranch
Date
apr Sun 27
Days Raw Files
Start
15:15
First Raw Start
14:58
Duration
00:25:00
Offset
0:16:15
End
15:40
Last Raw End
15:58
Chapters
00:00
0:00:12
0:12:52
Total cuts_time
24 min.
https://pretalx.northbaypython.org/nbpy-2025/talk/XVXLJ3
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In Python, assignment statements don't copy objects, and data structures don't actually contain objects. These two surprising facts have a *lot* of interesting consequences and are the reason behind many of Python's design decisions. In this talk, we'll explore the reference-like nature of Python's variables and objects, noting both the benefits and gotchas involved. Among other ideas, we'll see that in Python: - The word "change" is ambiguous - Copying is usually explicit - Infinitely recursive data structures aren't a concern - And tuples aren't always immutable During the process, we'll poke at our own mental model of Python and we'll get a bit pedantic at times. Join us to learn how in Python, it's pointers (or references, names, bindings, or aliases) all the way down.
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