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  1. from tkinter import*
  2. I=IntVar
  3. B=Checkbutton
  4. class f(Tk):
  5.     def __init__(self):
  6.         s=self
  7.         Tk.__init__(s)
  8.         s.c=I()
  9.         s.v=I()
  10.         s.C=B(self,text="FAST",variable=s.c,onvalue=1,offvalue=0)
  11.         s.C.pack()
  12.         s.cs=0
  13.         Tk.after(s,100,f)
  14.     def f(self):
  15.         s=self
  16.         if s.c != s.cs:
  17.             print(s.c)
  18.             s.cs=s.c
  19.         Tk.after(s,100,f)
  20. f().mainloop()
  21.  
Runtime error #stdin #stdout #stderr 0.08s 12616KB
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Standard input is empty
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Standard output is empty
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Traceback (most recent call last):
  File "/usr/lib/python3.2/tkinter/__init__.py", line 40, in <module>
    import _tkinter
ImportError: No module named _tkinter

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "./prog.py", line 1, in <module>
  File "/usr/lib/python3.2/tkinter/__init__.py", line 42, in <module>
    raise ImportError(str(msg) + ', please install the python-tk package')
ImportError: No module named _tkinter, please install the python-tk package
https://ideone.com/YHLZIQ
language:
Python 3 (python  3.9.5)
created:
9 years ago
visibility:
public

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