Python 如何消除django xlrd中的权限错误

我尝试通过导入包含详细信息的excel来创建模型字段，但得到了权限错误。有什么问题吗

景色

def UploadTeacherView(request):
    message=''
    if request.method == 'POST':
        form = NewTeachersForm(request.POST, request.FILES)
        if form.is_valid():
            excel_file = request.FILES['file']
            try:
                import os
                import tempfile
                import xlrd
                fd, tmp = tempfile.mkstemp() # create two temporary file
                with os.open(fd, 'wb') as out: # create new file objects
                    out.write(excel_file.read())
                book = xlrd.open_workbook(tmp)
                print(book)
                sheet = book.sheet_by_index(0)
                obj=TeacherData(
                    code = sheet.cell_value(rowx=1, colx=1),
                    first_name = sheet.cell_value(rowx=2, colx=1),
                    last_name = sheet.cell_value(rowx=3, colx=1),
                    email = sheet.cell_value(rowx=4, colx=1),
                    phone = sheet.cell_value(rowx=5, colx=1),

                )
                obj.save()
            finally:
                os.remove(tmp)
        else:
            message='Invalid Entries'
    else:
        form = NewTeachersForm()
    return render(request,'new_teacher.html', {'form':form,'message':message})

下面是我上传文件时遇到的错误

PermissionError at /teachers/upload
[WinError 32] The process cannot access the file because it is being used by another process: 'C:\\Users\\FRGULI~1\\AppData\\Local\\Temp\\tmpm87yli8l'

回溯（最近一次呼叫最后一次）： UploadTeacherView中的文件“D:\Python\Django\Links Online exames\Links\u Online\u Results\teachers\views.py”，第41行 将os.open（fd，'wb'）作为out:#创建新的文件对象 TypeError:open:路径应为字符串、字节或os.PathLike，而不是int

在处理上述异常期间，发生了另一个异常：

Traceback (most recent call last):
  File "D:\Python\Django\Links Online Exams\env\lib\site-packages\django\core\handlers\exception.py", line 47, in inner
    response = get_response(request)
  File "D:\Python\Django\Links Online Exams\env\lib\site-packages\django\core\handlers\base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "D:\Python\Django\Links Online Exams\Links_Online_Results\teachers\views.py", line 55, in UploadTeacherView
    os.unlink(tmp)
PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: 'C:\\Users\\FRGULI~1\\AppData\\Local\\Temp\\tmpkdyl14y2'

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您的Excel文件已由另一个进程（Excel）打开。或者，目录中还有一个剩余的锁文件。我如何摆脱这个？？？？？代码的格式是否正确@Laurent Laport关闭Excel应用程序并再次运行代码。任何地方都没有打开Excel…您让我们猜测错误发生在哪里。请更新问题以包含完整的错误消息回溯。