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Excel file in openpyxl cannot be opened

Another system saves a Excel file to a specific folder. I can manually open that file just fine and the cells don't show anything weird.

I wanted to iterate over all lines with:

        Zeilen_data = 0
        while 1:
            if data.cell(row=Zeilen_data+1, column=1).value != None:
                Zeilen_data += 1
            else:
                break

(could've been done much shorter, i know) Anyway, already in column 1, cell 2, which holds just a 0, this error occurs:

Traceback (most recent call last):
  File "/Volumes/paul/Armin/SBP/data.py", line 57, in <module>
    if data.cell(row=Zeilen_data+1, column=1).value != None:
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/openpyxl/worksheet/worksheet.py", line 240, in cell
    cell = self._get_cell(row, column)
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/openpyxl/worksheet/_read_only.py", line 128, in _get_cell
    for row in self._cells_by_row(column, row, column, row):
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/openpyxl/worksheet/_read_only.py", line 79, in _cells_by_row
    for idx, row in parser.parse():
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/openpyxl/worksheet/_reader.py", line 155, in parse
    row = self.parse_row(element)
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/openpyxl/worksheet/_reader.py", line 286, in parse_row
    cells = [self.parse_cell(el) for el in row]
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/openpyxl/worksheet/_reader.py", line 286, in <listcomp>
    cells = [self.parse_cell(el) for el in row]
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/openpyxl/worksheet/_reader.py", line 202, in parse_cell
    value = _cast_number(value)
  File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/openpyxl/worksheet/_reader.py", line 81, in _cast_number
    return float(value)
ValueError: could not convert string to float: '.'

I'm running out of ideas of how to fix it. Changing the line to if str(data.cell(row=Zeilen_data+1, column=1).value) != str("None"): doesn't fix it.

The only way I found is to open the file manually and just save it again. Then everything works fine, but I'd dislike to open and save it manually every time.



source https://stackoverflow.com/questions/73311075/excel-file-in-openpyxl-cannot-be-opened
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