让我们假设一个简单的tkinter
表单最初在Listbox
中使用selectmode=EXTENDED
小部件定义。我想编写一个按钮,它将向表单添加高级选项,从而强制用户选择列表中的单个项目。这转换为更改为selectmode=SINGLE
。
我的代码无效。也许我根本无法重新定义Listbox
,我应该以其他方式访问参数selectmode
?
class DefineMultiSelectForm(Frame):
def __init__(self, master, listtodisplay=[]):
Frame.__init__(self, master=master)
self.listtodisplay=listtodisplay
self.create_widgets()
self.pack(fill=BOTH, expand=1)
def create_widgets(self):
self.listbox = Listbox(self,selectmode=EXTENDED, width=50)
self.listbox.grid(row=0, column=0, columnspan=4, sticky=W+E+N+S)
self.advanced_butt = Button(self, text="Advanced Editing", command=self.advanced)
self.advanced_butt.grid (row=7, column=2, sticky=W+E)
self.simplifd_butt = Button(self, text="Simple Editing", command=self.simple)
self.simplifd_butt.grid (row=7, column=1, sticky=W+E)
def advanced(self):
self.listbox = Listbox(self,selectmode=SINGLE, width=50)
def simple(self):
self.listbox = Listbox(self,selectmode=EXTENDED, width=50)
非常感谢提前!
答案 0 :(得分:2)
我不确定if 'username' in request.session:
if request.method == 'POST':
if 'image' in request.FILES:
form = UploadImageForm(request.POST, request.FILES)
if form.is_valid():
# Here goes the documentation code
return HttpResponse(request.FILES['image'].content_type)
//here i want to rename and move uploaded files
else:
return redirect('/upload_image')
else:
return redirect('/login/')
态度,但对于大多数tkinter属性,你可以改变它:
selectmode
你的方式不起作用的原因就是你所说的,你正在重新定义变量。