openpyxl: 'module' object has no attribute 'get_column_letter'

[hdknr]

• 仕様が変わったのか？

[hdknr]

-from openpyxl import load_workbook, Workbook, cell
+from openpyxl import load_workbook, Workbook
+from openpyxl.utils import get_column_letter

     def writerow(self, row):
         for i in xrange(1, len(row) + 1):
-             ci = "{0}{1}".format(cell.get_column_letter(i), self.row)
+            ci = "{0}{1}".format(get_column_letter(i), self.row)
              self.sheet.cell(ci).value = force_unicode(row[i - 1])
          self.row += 1

[shyed2001]

print(openpyxl.cell.get_column_letter(1))

does not work rather use print(openpyxl.utils.get_column_letter(1))