保存工作簿时出现KeyError

Question

文件transaction.xlsx不会更新，这完全是由于add_chart（）引起的。如果我注释掉add_chart，不会出现所有这些错误，但是我想绘制图表，这是我知道的唯一方法。transanctions2.xlsx文件已创建，但已损坏，但确实出现了许多错误。

from openpyxl.chart import BarChart, Reference

wb1 = xl.load_workbook('transactions.xlsx')
sheet = wb1['Sheet1']
cell = sheet.cell(1, 1)

for row in range(2, sheet.max_row + 1):
    cell = sheet.cell(row, 3)
    corrected_price = cell.value * 0.9
    corrected_price_cell = sheet.cell(row, 4)
    corrected_price_cell.value = corrected_price

values = Reference(sheet,
                   min_row=2,
                   max_row=sheet.max_row,
                   min_col=4,
                   max_col=4)
chart = BarChart()
chart.add_data(values)
sheet.add_chart(chart, 'f2')

wb1.save('transactions2.xlsx')



Traceback (most recent call last):
  File "C:/Users/Saman/PycharmProjects/Excel/excel_edit.py", line 23, in <module>
    wb1.save('transactions2.xlsx')
  File "C:\Users\Saman\PycharmProjects\Excel\venv\lib\site-packages\openpyxl\workbook\workbook.py", line 397, in save
    save_workbook(self, filename)
  File "C:\Users\Saman\PycharmProjects\Excel\venv\lib\site-packages\openpyxl\writer\excel.py", line 294, in save_workbook
    writer.save()
  File "C:\Users\Saman\PycharmProjects\Excel\venv\lib\site-packages\openpyxl\writer\excel.py", line 276, in save
    self.write_data()
  File "C:\Users\Saman\PycharmProjects\Excel\venv\lib\site-packages\openpyxl\writer\excel.py", line 76, in write_data
    self._write_worksheets()
  File "C:\Users\Saman\PycharmProjects\Excel\venv\lib\site-packages\openpyxl\writer\excel.py", line 219, in _write_worksheets
    self._write_drawing(ws._drawing)
  File "C:\Users\Saman\PycharmProjects\Excel\venv\lib\site-packages\openpyxl\writer\excel.py", line 142, in _write_drawing
    self._archive.writestr(drawing.path[1:], tostring(drawing._write()))
  File "C:\Users\Saman\PycharmProjects\Excel\venv\lib\site-packages\openpyxl\drawing\spreadsheet_drawing.py", line 283, in _write
    anchor = _check_anchor(obj)
  File "C:\Users\Saman\PycharmProjects\Excel\venv\lib\site-packages\openpyxl\drawing\spreadsheet_drawing.py", line 224, in _check_anchor
    row, col = coordinate_to_tuple(anchor)
  File "C:\Users\Saman\PycharmProjects\Excel\venv\lib\site-packages\openpyxl\utils\cell.py", line 201, in coordinate_to_tuple
    return int(row), _COL_STRING_CACHE[col]
KeyError: 'f'

Answer 1

命名列时大小写很重要-具体来说，它们是大写的：

sheet.add_chart(chart, 'F2')

我更改f为F。