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Proper way to deeply copy a Wikicode object #317

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@avidspartan1

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@avidspartan1
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Hi! I'm curious as to the "proper" way to deeply copy a Wikicode object.

So far, I've been using the copy module's deepcopy method successfully, although recently I ran into a recursion error (stacktrace abbreviated):

  ...
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 231, in _deepcopy_dict
    y[deepcopy(key, memo)] = deepcopy(value, memo)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 172, in deepcopy
    y = _reconstruct(x, memo, *rv)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 271, in _reconstruct
    state = deepcopy(state, memo)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 146, in deepcopy
    y = copier(x, memo)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 231, in _deepcopy_dict
    y[deepcopy(key, memo)] = deepcopy(value, memo)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 172, in deepcopy
    y = _reconstruct(x, memo, *rv)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 288, in _reconstruct
    item = deepcopy(item, memo)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 172, in deepcopy
    y = _reconstruct(x, memo, *rv)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 271, in _reconstruct
    state = deepcopy(state, memo)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 146, in deepcopy
    y = copier(x, memo)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 231, in _deepcopy_dict
    y[deepcopy(key, memo)] = deepcopy(value, memo)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 172, in deepcopy
    y = _reconstruct(x, memo, *rv)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 271, in _reconstruct
    state = deepcopy(state, memo)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 146, in deepcopy
    y = copier(x, memo)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 231, in _deepcopy_dict
    y[deepcopy(key, memo)] = deepcopy(value, memo)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 172, in deepcopy
    y = _reconstruct(x, memo, *rv)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 288, in _reconstruct
    item = deepcopy(item, memo)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 172, in deepcopy
    y = _reconstruct(x, memo, *rv)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 271, in _reconstruct
    state = deepcopy(state, memo)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 146, in deepcopy
    y = copier(x, memo)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 231, in _deepcopy_dict
    y[deepcopy(key, memo)] = deepcopy(value, memo)
  File "C:\Users\pdhoi\AppData\Local\Programs\Python\Python310\lib\copy.py", line 137, in deepcopy
    d = id(x)
RecursionError: maximum recursion depth exceeded while calling a Python object

One thought was to raise the recursion limit, but I thought I'd post here first to see if there's a better way to deeply copy a Wikicode object.

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