#영업이익
    year_list = []
    for filename in name_list:
        book = openpyxl.load_workbook(filename)
        sheet = book.worksheets[0]
        def findExistString(searchString, text):
            if searchString in text: return True
            else: return False
        def findNonExistString(searchString, text):
            if searchString in text: return False
            else: return True
        for row in sheet.rows:
            if findExistString("영업", row[1].value):
                    year_list.append(filename[7:14])
                    break

이렇게 해서 year_list를 추출했는데요 out값이

    ['2011.12',
     '2012.12',
     '2013.12',
     '2014.12',
     '2015.12',
     '2016.12',
     '2017.12',
     '2018.12',
     '2019.12']

이렇게 나왔습니다. 이대로 for 구문에 넣으니 실행이 안되더군여. 아래는 for-loop구문입니다

    sheet1 = wb.active
    file_name = '한전.xlsx'
    sheet1.title = 'sampleSheet'
    for coulumn_index in year_list:
        sheet1.cell(row=1, column=coulumn_index).value = coulumn_index

    wb.save(filename=file_name)

out

TypeError                                 Traceback (most recent call last)
<ipython-input-68-380cc469c2fa> in <module>
      3 sheet1.title = 'sampleSheet'
      4 for coulumn_index in year_list:
----> 5     sheet1.cell(row=1, column=coulumn_index).value = coulumn_index
      6 
      7 wb.save(filename=file_name)

~\anaconda3\lib\site-packages\openpyxl\worksheet\worksheet.py in cell(self, row, column, value)
    233         """
    234 
--> 235         if row < 1 or column < 1:
    236             raise ValueError("Row or column values must be at least 1")
    237 

TypeError: '<' not supported between instances of 'str' and 'int'

​ str(year_list)로도 실행해 보았지만 안되더군여 제가 만들고자하는건 year_list를 뽑고 그데이터를 엑셀 에 나열시키는게 목표입니다!