func() missing 1 required positional argument: 'event'

Question

why this code gives that error and how to bind a keyboard key to a function in the right way
from tkinter import*
w=Tk()
c=Canvas(w,bg='black',width=300,height=300)
c.grid()
sk=c.create_rectangle(5, 5, 25, 25, fill = "red")
def mv(event):
c.move(sk,1,0)
w.after(50,mv)
w.bind('<Button-1>',mv)

Answer 1

Here is a fix to your code:
https://code.sololearn.com/cnFKS3MyYXI5/?ref=app

Try to write clean code next time. Readability is important, for both you and others who may read your code.

Here are you mistakes:
1. You did not use the window.mainloop()
2. In the line window.after(50,mv), you were missing the 'event' argument, thus the error.
You must use a lambda function in order to pass the argument to the function, like this:
windows.after(50, lambda: mv(event))

Answer 2

It is a very bad habit to use abbreviations in programming, unless it's a really small script. What is sk for ?

Answer 3

1. You forgot the mainloop
2. I think the problem is coming from the last line inside the function. When you run w.after(50, mv), you are not giving any parameters to it, thus the error.

Answer 4

I don't understand what should I do to fix the problem