Python

Getting an input from arrow keys.

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Join Date: Sep 2009

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Getting an input from arrow keys.

Oct 8th, 2009

Okay, I'm trying to make a python game (not with pygame), I want it to use the arrow keys. But the thing is, I don't know how to get it to respond to the arrow keys. So here's what I want to do.

If the user presses the up arrow key set the variable 'direction' to up, if the press the down arrow key set direction to 'down' etc. Would this be possible? If so, how? The only thing I know is that you need to use KeyboardInterupt or something like that.

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Posting Virtuoso

Oct 8th, 2009

If you a using a GUI/event-driven framework, then yes, it's possible. If you are using console python, then no.

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Oct 9th, 2009

I'm perfectly fine with using tkinter. But I don't even know how to do that

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Oct 9th, 2009

Here is an example of a Tkinter key logger ...

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# KeyLogger_tk2.py
# show a character key when pressed without using Enter key
# hide the Tkinter GUI window, only console shows
 
try:
    # Python2
    import Tkinter as tk
except ImportError:
    # Python3
    import tkinter as tk
 
def key(event):
    """shows key or tk code for the key"""
    if event.keysym == 'Escape':
        root.destroy()
    if event.char == event.keysym:
        # normal number and letter characters
        print( 'Normal Key %r' % event.char )
    elif len(event.char) == 1:
        # charcters like []/.,><#$ also Return and ctrl/key
        print( 'Punctuation Key %r (%r)' % (event.keysym, event.char) )
    else:
        # f1 to f12, shift keys, caps lock, Home, End, Delete ...
        print( 'Special Key %r' % event.keysym )
 
 
root = tk.Tk()
print( "Press a key (Escape key to exit):" )
root.bind_all('<Key>', key)
# don't show the tk window
root.withdraw()
root.mainloop()
# KeyLogger_tk2.py
# show a character key when pressed without using Enter key
# hide the Tkinter GUI window, only console shows

try:
    # Python2
    import Tkinter as tk
except ImportError:
    # Python3
    import tkinter as tk

def key(event):
    """shows key or tk code for the key"""
    if event.keysym == 'Escape':
        root.destroy()
    if event.char == event.keysym:
        # normal number and letter characters
        print( 'Normal Key %r' % event.char )
    elif len(event.char) == 1:
        # charcters like []/.,><#$ also Return and ctrl/key
        print( 'Punctuation Key %r (%r)' % (event.keysym, event.char) )
    else:
        # f1 to f12, shift keys, caps lock, Home, End, Delete ...
        print( 'Special Key %r' % event.keysym )


root = tk.Tk()
print( "Press a key (Escape key to exit):" )
root.bind_all('<Key>', key)
# don't show the tk window
root.withdraw()
root.mainloop()