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Support deepcopying without copying references to the parent cube - #996

Merged

alasdairwilson merged 8 commits into

nabobalis:new-instance-copies

Oct 23, 2026

Merged

Support deepcopying without copying references to the parent cube#996
alasdairwilson merged 8 commits into
sunpy:mainfrom
nabobalis:new-instance-copies

Commits on Oct 23, 2026
- Stop NDCube._new_instance copying the whole cube through back-references
  
  nabobalis
  authored and
  Cadair
  committed
  7f80a7d
- Bound each operation's memory peak in the new-instance copy test
  
  nabobalis
  authored and
  Cadair
  committed
  8fa5440
- Copy fill_masked's uncertainty without the cube, and multiply without copying the new uncertainty again
  
  nabobalis
  authored and
  Cadair
  committed
  26356cf
- fix: avoid copying coordinate parents
  
  nabobalis
  authored and
  Cadair
  committed
  7cd9d31
- Also support deepcopying Plotter without copying parent
  Cadair
  committed
  0638858
- Apply batched suggestions from code review
  Cadair
  committed
  861fccb
- Share the deepcopy helper and tidy comments and tests from review
  
  nabobalis
  authored and
  Cadair
  committed
  1f941c1
- Update ndcube/ndcube.py
  alasdairwilson
  authored
  81cc996