6.11、判断一个 item 是否被选中

# selection_include：指定索引的 item 是否被选中
from Tkinter import *
root = Tk()
lb = Listbox(root)
for i in range(10):
lb.insert(END,str(i*100))
lb.selection_set(3,8)
print lb.selection_includes(8)
print lb.selection_includes(0)
lb.pack()
root.mainloop()
#返回结果：True Flase，即 8 包含在选中的索引中，0 不包含在选中的索引中

代码

from tkinter import *
quehui = Tk()
lb = Listbox(quehui)
for i in range(10):
lb.insert(END,str(i*100))

lb.selection_set(3,8)
print(lb.selection_includes(8))
print(lb.selection_includes(0))
lb.pack()
quehui.mainloop()