Openpyxl get_column_letter ValueError

Question

我在python中创建了一个excel比较工具。这是我的代码：

bananacell.py：

import time

print("Welcome to Banana Cell the open source excel tool!")
time.sleep(1)
import compare
compare.main()

compare.py：

import openpyxl, tkinter, time
from tkinter import Tk
from tkinter.filedialog import askopenfilename
from openpyxl.utils import get_column_letter


def main():
    print('Select file 1 from folder')
    root = Tk()
    filename = askopenfilename()
    root.withdraw()
    wb1 = openpyxl.load_workbook(filename)
    names1 = input('Sheet 1 name: ')
    sheet1 = wb1.get_sheet_by_name(str(names1))

    print('Select file 2 from folder')
    root1 = Tk()
    filename1 = askopenfilename()
    root1.withdraw()
    wb2 = openpyxl.load_workbook(str(filename1))
    names2 = input('Sheet 2 name: ')
    sheet2 = wb2.get_sheet_by_name(str(names2))

    object1 = list(sheet1['A1':get_column_letter(sheet1.max_row)])
    object2 = list(sheet2['A1':get_column_letter(sheet2.max_row)])

    for i in object1:
        for x in object2:
            if i != x:
                print('Diff found!')
                print (i.value, i.coordinate)
                print (x.value, x.coordinate)
                print('----------')
                break

但是我继续得到以下ValueError：

有谁知道如何解决这个问题？任何帮助将不胜感激。

Answer 1

看起来你达到了工作表中列的限制。

openpyxl支持的工作表中最多18,278列的

There's a limit，以及MS Office Excel（16,384）和Apple Numbers（仅255列）中的even less。

您可以在代码中添加检查，例如：

MAX_COLUMNS = 18278

if active_sheet.max_column > MAX_COLUMNS:
    raise ValueError(
        'Too many columns in the sheet, the limit is {}, found: {}'.format(
            MAX_COLUMNS,
            ctive_sheet.max_column,
        )
    )

或者制作一个支持更多列的pull request to openpyxl：）

Answer 2

这是错误的：

object1 = list(sheet1['A1':get_column_letter(sheet1.max_row)])  

您传递sheet1['A1':D]之类的内容，您需要sheet1['A1':D1000]

我相信这个嵌套循环不起作用：
     for i in object1: for x in object2: