Question

我已经导入了tkinter.messagebox，我的程序在我F5时顺利运行并在IDLE上测试它。但是，当应该显示消息框时，我的程序不能在控制台上运行，我收到错误：

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Program Files\lib\tkinter\__init__.py", line 1456, in __call__
    return self.func(*args)
  File "U:\my documents\6th form\A2\Computing\F454\Code and Prototyping\trackeve
nts.py", line 204, in validation
    messagebox.showerror("Data invalid", "The data you have entered is invalid.
Please make sure you have submitted it correctly.")
NameError: global name 'messagebox' is not defined

如果需要，我导入消息框和代码部分：

import tkinter.messagebox

def validation():
(...)
elif completedValidation == False:
    messagebox.showerror("Data invalid", "The data you have entered is invalid. Please make sure you have submitted it correctly.")

Answer 1

如果您import tkinter.messagebox，则必须如此引用：tkinter.messagebox。如果您想将其别名为messagebox，则需要from tkinter import messagebox。

Answer 2

试试这个

import Tkinter
import tkMessageBox
#rest of the code and replace the below line
tkMessageBox.showerror("Data invalid", "The data you have entered is invalid. Please make sure you have submitted it correctly.")

NameError：未定义全局名称“messagebox” - CONSOLE MODE

2 个答案: