Question

我正在尝试将标签传递给我的列表框的回调函数，但不知何故我无法做到。

我已经尝试过lambdas，但没有成功。

这是我目前的代码段：

VEHICLE_ABBR BLOCK_NO   DEPARTURE_TIME  Trip
SXXB1410D   21,760,010  19,500           1
SXXB1410D   21,760,010  24,900           2
SXXB1410D   21,760,010  31,020           3
TXXB1102R   21,760,026  19,800           1
TXXB1102R   21,760,026  24,480           2
MXXB1410P   21,760,011  17,500           1
MXXB1410P   21,760,011  19,900           2
JXXB1102K   21,760,027  20,800           1
JXXB1102K   21,760,027  22,480           2
JXXB1102K   21,760,027  23,480           3


SELECT

   BLOCK_NO

    ,VEHICLE_ABBR

    ,DEPARTURE_TIME

,SUM(CASE WHEN TRIP = 1 THEN 1 ELSE 0 END)   

OVER (PARTITION BY BLOCK_NO,VEHICLE_ABBR  ORDER BY DEPARTURE_TIME, TRIP ROWS UNBOUNDED PRECEDING) AS TRIP_NUM

FROM
     (
      SELECT
        BLOCK_NO
        ,VEHICLE_ABBR
        ,DEPARTURE_TIME

    ,ROW_NUMBER() OVER (PARTITION BY BLOCK_NO,VEHICLE_ABBR,DEPARTURE_TIME ORDER BY DEPARTURE_TIME ) AS TRIP

  FROM tab

 ) AS dt;

我怎样才能得到类似的东西：

program_list.bind('<<ListboxSelect>>', MainController.select_program)

编辑：其他功能：

program_list.bind('<<ListboxSelect>>', MainController.select_program(arg1))

Answer 1

您可以像这样使用lambda：

<强> CHANGED

from tkinter import *

root = Tk()

def on_select(event, arg):
    lb = event.widget
    idx = lb.curselection()
    item = lb.get(idx)
    print('%s, %s' % (item, arg))

lst = Listbox(root)
for i in range(5):
    lst.insert(END, 'item ' + str(i))
lst.pack()
lst.bind('<<ListboxSelect>>', lambda event: on_select(event, 'another value'))

root.mainloop()

将多个参数传递给列表框

1 个答案: