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# Mutable vs. Immutable

**Mutable** = can be changed after creation.
**Immutable** = cannot be changed after creation; any "modification" creates a new object.

## Python examples

| Mutable | Immuta

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ordering BA envelope code_haskell_alt (AB)envelope code_pipe_pipe (AB)envelope en_arrow (AB)envelope en_bare_or (AB)envelope en_bare_or_q (AB)envelope en_pipe (AB)envelope en_vs (AB)envelope en_vs_q (AB)anchor view all 60 cells across efforts × anchors