我想在选中特定行时获取第一个值。这看起来很简单,但我没有达到我错过了什么东西。我得到的是print语句中的第一个值,但在那之后得到了以下错误。请帮我做这个。多谢各位
1
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Users\Python\Python38\lib\tkinter\__init__.py", line 1883, in __call__
return self.func(*args)
File "C:\Users\Desktop\select.py", line 31, in on_tree_select
print(str(curItem['values'][0]))
IndexError: string index out of range
示例代码:
from tkinter import ttk
import tkinter
import threading
def main():
root = tkinter.Tk()
ccols = ('num1','num2')
treeview = ttk.Treeview(root, columns=ccols)
for col in ccols:
treeview.heading(col, text=col)
treeview.grid(row=8, column=0)
def sample():
indexes = [treeview.index(id) for id in treeview.selection()]
for i in range(2):
treeview.delete(*treeview.get_children())
treeview.insert("", "end", values=(i,0))
for idx in indexes:
child_id = treeview.get_children()[idx]
treeview.selection_add(child_id)
threading.Timer(4.0, sample).start()
def on_tree_select( event):
curItem = treeview.item(treeview.focus())
print(str(curItem['values'][0])) #getting output as 1 but then error
treeview.bind("<<TreeviewSelect>>", on_tree_select)
sample()
root.mainloop()
if __name__ == '__main__':
main()
尝试使用
try - except
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