如何根据第一个列表框的选择生成第二个列表框？
我有三个列表框，第一个列表框里有一些选项。当用户选择一个选项后，第二个列表框需要根据之前的选择来填充内容。下面是我尝试过的代码。我使用的是Python 2.7。
import sys
import Tkinter as TK
font = ('Times New Rome', 12, 'Bold')
Template = ''
Entrybox1 = ''
Entrybox2 = ''
Lb1 = ''
Lb2 = ''
Lb3 = ''
class smartstopkiosk_tk(TK.Tk):
def __init__(self, parent):
TK.Tk.__init__(self,parent)
self.parent = parent
self.initialize()
def initialize(self):
self.grid()
#self.parent.title("Smartstop Kiosk")
global Entrybox1
global Entrybox2
global LocalTemplate
global Software
seltext = ""
software = ('Microsoft', 'Abode', 'SAP', 'Lotus Notes', 'Jive','Cisco', 'Chrome')
hardware = ("Computer", "Charger", " USB Headset", "Keyboard", "Mouse", "Webcam")
microsoft = ("Outlook", "Lync", "Word", "Excel", "PowerPoint", "Visio", "Project", "Publisher")
adobe = ("Adobe Reader", "Java", "Flash", "Adobe Pro")
cisco = ('IP Communicator', '')
wireless = ("MYLOW", "Corporate", "Visitor", "MYLTW")
printers = ("2N", "2S", "3N", "3S", "4N", "4S", "5N", "5S")
mobile = ("Blackberry", "iPhone","iPad")
AD = ("Unlock", "Reset")
LocalTemplate = ('User Assistance with Software.', 'User Assistance with Hardware.', 'Mobile Device Support.',
'Software Installation Request', 'Hardware Request', 'Wireless Connection', 'Password Reset/Username Unlocked',
'Add Printer')
#creates font types
font = ('Times New Roman', 14, 'bold')
font2 = ('Times New Roman',12, 'bold')
#Creates Instructions for Users
stepOne = TK.LabelFrame(self, text=" 1. User Information: ", font = font2)
stepOne.grid(row=0, columnspan=7, sticky='w', padx=5, pady=5, ipadx=5, ipady=5)
stepTwo = TK.LabelFrame(self, text="2. Select Program or Hardware Problems", font = font2)
stepTwo.grid(row=3, columnspan=7, sticky='w', padx=5, pady=5, ipadx=5, ipady=5)
stepThree = TK.LabelFrame(self, text="Please Enter the Problem or Your Request:", font = font2)
stepThree.grid(row=6, columnspan=7, sticky='w', padx=5, pady=5, ipadx=5, ipady=5)
#Creates Label for Users
Label1 = TK.Label(stepOne, text = "First Name", font = font)
Label1.grid(column = 2, row = 0, sticky = 'w', padx = (10, 10))
Label2 = TK.Label(stepOne, text = "Last Name", font = font)
Label2.grid(column = 4, row = 0, sticky = 'w', padx = (10, 10))
Label3 = TK.Label(stepOne, text = "UserName", font = font)
Label3.grid(column = 6, row = 0, sticky = 'w', padx = (10, 10))
#Creates Entry Box for User input
self.entry = TK.Entry(stepOne, width = 30)
self.entry.grid(column = 2, row = 1,padx = (10, 10))
entry2 = TK.Entry(stepOne, width = 30)
entry2.grid(column = 4, row = 1,padx = (10, 10))
entry3 = TK.Entry(stepOne, width = 30)
entry3.grid(column = 6, row = 1, columnspan = 2, padx = (10, 10))
#Creates User Input Box
Usertext = TK.Text(stepThree, height = 10, width = 110, font = font)
Usertext.grid(column = 2, row = 15, padx = (10, 10))
#Creates List Boxes
Listbox1 = TK.Listbox(stepTwo, selectmode = 'SINGLE', height = 10, width = 35, font = font, exportselection = 0)
Listbox1.grid(column = 2, row = 1, padx = (10, 10))
for i in LocalTemplate:
Listbox1.insert(TK.END, i)
Listbox1.bind("<<ListboxSelect>>", self.selection)
Listbox2 = TK.Listbox(stepTwo, selectmode = 'SINGLE', height = 10, width = 35, font = font, exportselection = 0)
Listbox2.grid(column = 4, row = 1, padx = (10, 10))
for x in seltext:
Listbox2.insert(TK.END, x)
Listbox2.bind("<<ListboxSelect>>", self.selection)
Listbox3 = TK.Listbox(stepTwo, selectmode = 'SINGLE', height = 10, width = 35, font = font, exportselection = 0)
Listbox3.grid(column = 6, row = 1, padx = (10, 10))
#Creates Buttons
Submit = TK.Button(self, text = 'Submit', font = font2)
Submit.grid(column = 3, row = 10, sticky = 'we', padx = (10, 10))
Startover = TK.Button(self, text = 'Cancel', font = font2)
Startover.grid(column = 4, row = 10, sticky = 'we', padx = (10, 10))
def selection(self, val):
sender = val.Listbox1
index = listbox1.curselection()
value = Listbox1.get(index[0])
if index == 1 or index == 4:
seltext = software
elif index == 2 or index == 5:
seltext = hardware
elif index == 3:
seltext = mobile
elif index == 6:
seltext = wireless
elif index == 7:
seltext = AD
elif index == 8:
seltext = printer
def main():
app = smartstopkiosk_tk(None)
app.geometry("1300x768")
app.mainloop()
if __name__ == "__main__":
main()
我一直收到这个错误信息：回溯（Traceback） 文件 "C:\python27\lib\lib-tk\Tkinter.py"，第1845行，在 getattr 中 返回 getattr(self.tk, attr) AttributeError: selection
更新！ 这是我如何在第一个列表框中添加文本，并根据你的选择填充第二个列表框的方法。
def getchoice(event):
seltext = ''
INDEX = Listbox1.curselection()
if INDEX == (0,) or INDEX == (4,):
seltext = software
elif INDEX == (1,) or INDEX == (5,):
seltext = hardware
elif INDEX == (2,):
seltext = mobile
elif INDEX == (3,):
seltext = wireless
elif INDEX == (6,):
seltext = AD
elif INDEX == (7,):
seltext = printers
print INDEX
Listbox2.delete(0, TK.END)
for x in seltext:
Listbox2.insert(TK.END, x)
#Creates List Boxes
Listbox1 = TK.Listbox(stepTwo, selectmode = 'SINGLE', height = 10, width = 35, font = font, exportselection = 0)
Listbox1.grid(column = 2, row = 1, padx = (10, 10))
for x in LocalTemplate:
Listbox1.insert(TK.END, x)
Listbox1.bind("<<ListboxSelect>>", getchoice)
Listbox2 = TK.Listbox(stepTwo, selectmode = 'SINGLE', height = 10, width = 35, font = font, exportselection = 0)
Listbox2.grid(column = 4, row = 1, padx = (10, 10))
Listbox2.bind("<<ListboxSelect>>", getchoice2)
Listbox3 = TK.Listbox(stepTwo, selectmode = 'SINGLE', height = 10, width = 35, font = font, exportselection = 0)
Listbox3.grid(column = 6, row = 1, padx = (10, 10))
2 个回答
0
这一行代码是问题所在，虽然错误信息可能已经告诉你了：
value = widget.get(selection[0])
你没有名为 selection 的变量。也许你是想用 index[0]，而不是 selection[0]，因为你在前面一行已经定义了 index？
当然，你也会遇到类似的问题，因为 widget 也是未定义的。
0
好的，@Jobes23，这个过程很有趣。不过你的代码里有几个“小白错误”：一开始你定义了 lbl1、2、3，但却用了 label1、2、3，这样 lbl1 就没用了。还有一些多余的变量和代码。此外，在设置列表框的变量时，你有时用了 ''，有时用了 "" 来包围文字，这虽然不影响代码运行，但保持一致的写法会更好。正如 Bryan Oakley 所说，你的代码看起来像是把各处的代码片段拼凑在一起，而没有考虑它们单独和一起是怎么工作的——理解代码是解决问题的关键。我尝试去掉了一些多余的代码，但不确定你到底需要多少。
我之前说过 self.selection 不是一个选项，所以我去掉了 listbox.bind(...)，而是做了一个按钮，按钮的命令指向一个函数，这个函数会获取选中的选项，并用这个结果把第二个列表框设置为一个字符串，我想这正是你想要实现的。
import Tkinter as TK
class smartstopkiosk_tk(TK.Tk):
def __init__(self, parent):
TK.Tk.__init__(self,parent)
self.parent = parent
self.initialize()
def initialize(self):
self.grid()
#self.parent.title("Smartstop Kiosk")
software = ('Microsoft', 'Abode', 'SAP', 'Lotus Notes', 'Jive','Cisco', 'Chrome')
hardware = ("Computer", "Charger", " USB Headset", "Keyboard", "Mouse", "Webcam")
microsoft = ("Outlook", "Lync", "Word", "Excel", "PowerPoint", "Visio", "Project", "Publisher")
adobe = ("Adobe Reader", "Java", "Flash", "Adobe Pro")
cisco = ('IP Communicator', '')
wireless = ("MYLOW", "Corporate", "Visitor", "MYLTW")
printers = ("2N", "2S", "3N", "3S", "4N", "4S", "5N", "5S")
mobile = ("Blackberry", "iPhone","iPad")
AD = ("Unlock", "Reset")
LocalTemplate = ('User Assistance with Software', 'User Assistance with Hardware', 'Mobile Device Support', 'Software Installation Request', 'Hardware Request', 'Wireless Connection', 'Password Reset/Username Unlocked',
'Add Printer')
def getchoice2():
print
# use same method to find out which of the second list is chosen, and carry on.
def getchoice():
seltext = ''
INDEX = Listbox1.curselection()
if INDEX == ('0',) or INDEX == ('4',):
seltext = software
if INDEX == ('1',) or INDEX == ('5',):
seltext = hardware
if INDEX == ('2',):
seltext = mobile
if INDEX == ('3',):
seltext = wireless
if INDEX == ('6',):
seltext = AD
if INDEX == ('7',):
seltext = printers
selectchoice.config(command = getchoice2)
for x in seltext:
Listbox2.insert(TK.END, x)
#creates font types
font = ('Times New Roman', 14, 'bold')
font2 = ('Times New Roman',12, 'bold')
#Creates Instructions for Users
stepOne = TK.LabelFrame(self, text=" 1. User Information: ", font = font2)
stepOne.grid(row=0, columnspan=7, sticky='w', padx=5, pady=5, ipadx=5, ipady=5)
stepTwo = TK.LabelFrame(self, text="2. Select Program or Hardware Problems", font = font2)
stepTwo.grid(row=3, columnspan=7, sticky='w', padx=5, pady=5, ipadx=5, ipady=5)
stepThree = TK.LabelFrame(self, text="Please Enter the Problem or Your Request:", font = font2)
stepThree.grid(row=6, columnspan=7, sticky='w', padx=5, pady=5, ipadx=5, ipady=5)
#Creates Label for Users
Label1 = TK.Label(stepOne, text = "First Name", font = font)
Label1.grid(column = 2, row = 0, sticky = 'w', padx = (10, 10))
Label2 = TK.Label(stepOne, text = "Last Name", font = font)
Label2.grid(column = 4, row = 0, sticky = 'w', padx = (10, 10))
Label3 = TK.Label(stepOne, text = "Mylan UserName", font = font)
Label3.grid(column = 6, row = 0, sticky = 'w', padx = (10, 10))
#Creates Entry Box for User input
self.entry = TK.Entry(stepOne, width = 30)
self.entry.grid(column = 2, row = 1,padx = (10, 10))
entry2 = TK.Entry(stepOne, width = 30)
entry2.grid(column = 4, row = 1,padx = (10, 10))
entry3 = TK.Entry(stepOne, width = 30)
entry3.grid(column = 6, row = 1, columnspan = 2, padx = (10, 10))
#Creates User Input Box
Usertext = TK.Text(stepThree, height = 10, width = 110, font = font)
Usertext.grid(column = 2, row = 15, padx = (10, 10))
#Creates List Boxes
Listbox1 = TK.Listbox(stepTwo, selectmode = 'SINGLE', height = 10, width = 35, font = font)
Listbox1.grid(column = 2, row = 1, padx = (10, 10))
for i in LocalTemplate:
Listbox1.insert(TK.END, i)
Listbox2 = TK.Listbox(stepTwo, selectmode = 'SINGLE', height = 10, width = 35, font = font)
Listbox2.grid(column = 4, row = 1, padx = (10, 10))
Listbox3 = TK.Listbox(stepTwo, selectmode = 'SINGLE', height = 10, width = 35, font = font)
Listbox3.grid(column = 6, row = 1, padx = (10, 10))
#Creates Buttons
selectchoice = TK.Button(self, text = 'select my choice', font = font2, command = getchoice)
selectchoice.grid(row = 5, column = 1, sticky = 'we', padx = (10, 10))
Submit = TK.Button(self, text = 'Submit', font = font2)
Submit.grid(column = 3, row = 10, sticky = 'we', padx = (10, 10))
Startover = TK.Button(self, text = 'Cancel', font = font2)
Startover.grid(column = 4, row = 10, sticky = 'we', padx = (10, 10))
def main():
app = smartstopkiosk_tk(None)
app.geometry("1300x768")
app.mainloop()
if __name__ == "__main__":
main()