修复Tkinter选项菜单中更改事件的第二次回调

Question

import Tkinter

import os
from os.path import isfile, isdir, join

Ymypath = "%s/input/" % (os.getcwd())
Ydirs = [d for d in os.listdir(Ymypath) if isdir(join(Ymypath, d))]

# Mpath = "%s/input/%s/" % (os.getcwd(),Yvariable.get())
# Mdirs = [d for d in os.listdir(Mpath) if isdir(join(Mpath, d))]

def update_mlist(curvalue):
    Y = curvalue
    # Rewrite the Menubutton associated with the Optionmenu.
    menu0 = toption0['menu']
    menu0.delete(0, 'end')

    menu = toption['menu']
    menu.delete(0, 'end')

    Mpath = "%s/input/%s/" % (os.getcwd(),Yvariable.get())
    Mdirs = [d for d in os.listdir(Mpath) if isdir(join(Mpath, d))]

    for n in range(len(Mdirs)):
        menu0.add_command(label=Mdirs[n], command=Tkinter._setit(targetM, Mdirs[n]))

    Mpath = "%s/input/%s/" % (os.getcwd(),curvalue)

    Mdirs = [d for d in os.listdir(Mpath) if isdir(join(Mpath, d))]

    targetM.set(Mdirs[0])

    Fpath = "%s/input/%s/%s" % (os.getcwd(),Yvariable.get(),targetM.get())
    onlyfiles = [f for f in os.listdir(Fpath) if isfile(join(Fpath, f))]
    onlyfilesN = sorted([int(f.split('-')[1]) for f in onlyfiles])

    for n in range(len(onlyfilesN)):
        menu.add_command(label=onlyfilesN[n], command=Tkinter._setit(targetD, onlyfilesN[n]))

    Fpath = "%s/input/%s/%s/" % (os.getcwd(),Y,targetM.get())
    onlyfiles = [f for f in os.listdir(Fpath) if isfile(join(Fpath, f))]
    onlyfilesN = sorted([int(f.split('-')[1]) for f in onlyfiles])
    targetD.set(onlyfilesN[0])


def update_dlist(val):

    menu = toption['menu']
    menu.delete(0, 'end')

    Fpath = "%s/input/%s/%s" % (os.getcwd(),Yvariable.get(),targetM.get())
    print Fpath
    onlyfiles = [f for f in os.listdir(Fpath) if isfile(join(Fpath, f))]
    onlyfilesN = sorted([int(f.split('-')[1]) for f in onlyfiles])

    for n in range(len(onlyfiles)):
        menu.add_command(label=onlyfilesN[n], command=Tkinter._setit(targetD, onlyfilesN[n]))

    Fpath = "%s/input/%s/%s/" % (os.getcwd(),Yvariable.get(),val)
    onlyfiles = [f for f in os.listdir(Fpath) if isfile(join(Fpath, f))]
    onlyfilesN = sorted([int(f.split('-')[1]) for f in onlyfiles])
    if len(onlyfilesN)>0:
        targetD.set(onlyfilesN[0])

master = Tkinter.Tk()

Tkinter.Label(text=u"Year: ").grid(row=0, column=0)
Yvariable = Tkinter.StringVar(value='2017')
coption = Tkinter.OptionMenu(master, Yvariable, *Ydirs, command=update_mlist)
coption.grid(row=0,column=1)

Tkinter.Label(text=u"Month: ").grid(row=1, column=0)
Mpath = "%s/input/%s/" % (os.getcwd(),Yvariable.get())
Mdirs = [d for d in os.listdir(Mpath) if isdir(join(Mpath, d))]
targetM = Tkinter.StringVar(value=Mdirs[0])
toption0 = Tkinter.OptionMenu(master, targetM, *Mdirs, command=update_dlist)
toption0.grid(row=1, column=1)

Tkinter.Label(text=u"Day: ").grid(row=2, column=0)
Fpath = "%s/input/%s/%s" % (os.getcwd(),Yvariable.get(),targetM.get())
onlyfiles = [f for f in os.listdir(Fpath) if isfile(join(Fpath, f))]
onlyfilesN = sorted([int(f.split('-')[1]) for f in onlyfiles])

if len(onlyfilesN)>0:
    targetD = Tkinter.StringVar(value=onlyfilesN[0])
else:
    targetD = Tkinter.StringVar(value='')

toption = Tkinter.OptionMenu(master, targetD, *onlyfilesN)
toption.grid(row=2, column=1)

master.mainloop()

天数列表未正确更新， 因为年份不更新。你知道吗

我尝试在Tkinter中绑定3个下拉菜单。你知道吗

没有错误消息， 但对于非默认年份，天数列表不会更新。你知道吗

嗨@mmgp，你知道怎么修吗？请帮帮我。你知道吗

可选：

将其实现为tkinter日历来选择年、月和日也是很有意思的（禁用了大多数周末和一些指定的工作日）。你知道吗

Answer 1

您定义Fpath两次，一次是正确的（使用get()），一次是错误的：

Fpath = "%s/input/%s/%s/" % (os.getcwd(),targetM,curvalue)

您需要将其更改为：

Fpath = "%s/input/%s/%s/" % (os.getcwd(),targetM.get(),curvalue)

让这成为关于重用变量名的一个教训。你知道吗