Python “如何修复”'；int'；“对象不可编辑”；tkinter中的错误

我想创建一个使用Bash命令的应用程序，但每次它都会导致Tkinter回调异常

我已经尝试过使用subprocess popen，但它甚至想启动这些命令

from tkinter import *
import os


# The following commands gets executed, if the user is pressing the action button
def button_action():
    update_button.config(os.system('sudo -S pacman -Syu'), text="Aktualisiert!")


# create a window
fenster = Tk()
# set the title of the window
fenster.title("Befehlsammlung")


# create button and labels
update_label = Label(fenster, text="Drücke auf Aktualisieren, um alle Pakete zu updaten.",)
update_button = Button(fenster, text="Aktualisieren", command=button_action)

exit_button = Button(fenster, text="Schließen", command=fenster.quit)

# Add your components in your favourite
update_label.pack()
update_button.pack()
exit_button.pack()


# wait for input
fenster.mainloop()

I除了按钮更改为“Aktualisiert”之外，没有实际的异常错误

Exception in Tkinter callback
Traceback (most recent call last):
  File "/usr/lib/python3.7/tkinter/__init__.py", line 106, in _cnfmerge
    cnf.update(c)
TypeError: 'int' object is not iterable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.7/tkinter/__init__.py", line 1705, in __call__
    return self.func(*args)
  File "/home/flozge/PycharmProjects/untitled1/GUI.py", line 7, in button_action
    update_button.config(os.system('sudo -S pacman -Syu'), text="Aktualisiert!")
  File "/usr/lib/python3.7/tkinter/__init__.py", line 1485, in configure
    return self._configure('configure', cnf, kw)
  File "/usr/lib/python3.7/tkinter/__init__.py", line 1469, in _configure
    cnf = _cnfmerge((cnf, kw))
  File "/usr/lib/python3.7/tkinter/__init__.py", line 109, in _cnfmerge
    for k, v in c.items():
AttributeError: 'int' object has no attribute 'items'

Process finished with exit code 0

---

您不需要将

os.system（'sudo-S pacman-Syu'）

调用作为

update\u button.config

的参数传递给它即可运行。您只需在

按钮\动作

函数中的某个地方调用它，当按

更新按钮=按钮（fenster，text=“Aktualisieren”，command=按钮\动作）

行中的规定单击“Aktalisieren”按钮时，将触发该函数

---

sudo-S pacman-Syu的示例输出是什么？是否要将该命令的输出作为函数

update\u button.config

的参数传递？该输出应与图像中的一样：或者在有更新时更新某些包。我想当我按下“Aktalisieren”按钮时，它会显示“sudo pacman-Syu”，所以是的

def button_action():
    os.system('sudo -S pacman -Syu')
    update_button.config(text="Aktualisiert!")