ValueError while acess cell._tc.bottom

[mepwang]

OS: updated ubuntu 24.04
Python: 3.12.8
Python-Docx: 1.1.2

test.docx

while parsing table in docx, ValueError exception occurred:
ValueError: no tc element at grid_offset=3

in line: bottom = cell._tc.bottom

code:

 for row_idx, row in enumerate(table.rows):
 for cell_idx, cell in enumerate(row.cells):
 top = cell._tc.top
 bottom = cell._tc.bottom
 left = cell._tc.left
 right = cell._tc.right

docx file: see test.docx in attachment

[mepwang]

it's a bug in oxml/table.py, line 79, function tc_at_grid_offset(self, grid_offset: int) -> CT_Tc

[alterlv]

I also encountered this error

[mepwang]

I also encountered this error

fix tc_at_grid_offset implementation in file src/docx/oxml/table.py:

 def tc_at_grid_offset(self, grid_offset: int) -> CT_Tc:
 """The `tc` element in this tr at exact `grid offset`.

 Raises ValueError when this `w:tr` contains no `w:tc` with exact starting `grid_offset`.
 """
 # -- account for omitted cells at the start of the row --
 
 if grid_offset < self.grid_before:
 raise ValueError(f"no `tc` element at grid_offset={grid_offset}")
 
 cell_dict = dict()
 cell_index = 0
 for tc in self.tc_lst:
 for _ in range(tc.grid_span):
 cell_dict[cell_index] = tc
 cell_index += 1
 
 if grid_offset not in cell_dict:
 raise ValueError(f"no `tc` element at grid_offset={grid_offset}")
 
 return cell_dict[grid_offset]
 
 # remaining_offset = grid_offset - self.grid_before

 # for tc in self.tc_lst:
 # # -- We've gone past grid_offset without finding a tc, no sense searching further. --
 # if remaining_offset < 0:
 # break
 # # -- We've arrived at grid_offset, this is the `w:tc` we're looking for. --
 # if remaining_offset == 0:
 # return tc
 # # -- We're not there yet, skip forward the number of layout-grid cells this cell
 # # -- occupies.
 # remaining_offset -= tc.grid_span

 # raise ValueError(f"no `tc` element at grid_offset={grid_offset}")

[strangePix]

所以更新了吗

[mepwang]

所以更新了吗

作者好像不活跃了，一大堆pull request在排队。自己做一个私有whl吧

[Witiko]

作者好像不活跃了，一大堆pull request在排队。自己做一个私有whl吧

That seems untrue, @scanny merged your pull request #1456 in June.

I created a pull request #1526 with your change from #1458 (comment).