如何用openpyxl读取表格内容，再将获取的内容保存为.txt文件

我在使用load_workbook（）读取excel获取内容后，再将内容保存为txt文件时遇到下面这栏报错
File "D:/python/excel_py.py", line 58, in sdx
yr = open('C:\iyb\ty.txt', 'w',
TypeError: load_workbook() got an unexpected keyword argument 'encoding'

代码如下

# -*- coding: utf-8 -*-
from openpyxl import *
from openpyxl.utils import get_column_letter, column_index_from_string




def excel_cellname():
    wb = load_workbook('C:/Users/USER/Desktop/20210709.xlsx')
    ws = wb.active
    maxRow = ws.max_row  # 获取最大行数
    maxColumn = ws.max_column  # 获取最大列数
    # print(ws['B3'].value)
    # print(maxRow, range(maxColumn))
    data_hang = []
    char = []
    charrow = []
    if maxRow > 2 and maxColumn > 2:
        for i in range(maxRow):
            for j in range(maxColumn):
                try:
                    if ws.cell(i, j).value != None:
                        char.append(j)
                        # print(ws.cell(i,j).value)
                        if ws.cell(i, j).value == "jk" and ws.cell(i, j + 1).value != None:
                            # print(i, j)
                            # print(ws.cell(i, j))
                            charrow.append(i)
                            data_hang.append(ws.cell(i, j + 2).value.replace("\n", ""))
                except:
                    pass

                    # continue
    # print(data_hang)
    print(charrow)
    print(get_column_letter(max(char)))
    print(get_column_letter(min(char) + 1))
    Cellmin = get_column_letter(min(char) + 1)
    Cellmax = get_column_letter(max(char))
    # print(ws["A1:D10"])
    charname = []
    for cr in charrow:
        # print(ws['B' + str(cr) + ':' + 'G' + str(cr)])
        for sw in ws[Cellmin + str(cr) + ':' + Cellmax + str(cr)]:
            for wf in sw:
                if wf.value != None:
                    # print(wf.value.replace("\n", ""))
                    charname.append(wf.value.replace("\n", ""))
    sdd = "\n".join(charname)
    er = sdd.replace("\n", "")
    qe = er.replace(" ", "")
    return qe


def sdx():
    xc = excel_cellname()
    print(xc)
    yr = open('C:\\iyb\\ty.txt', 'w',
              encoding='UTF-8')
    yr.write(xc)
    yr.flush()
sdx()