In python, how do you get it to input a keyboard press?

When I push the print screen button on my keyboard, I would like to trigger开发者_运维问答 an event, like this:

if keyboard-print screen:
    print "5"

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Note that the tkinter solution does not work on Mac (at least it does not work on my Mac). I tested it with Python 3.2.2 and Python 2.7.2. If the window is withdrawn, it will not get the focus and therefore it will not sense any of the key events.

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Tkinter has built-in keypress events.

import Tkinter as tk

def keypress(event):
if event.keysym == 'Escape':
root.destroy()
x = event.char
if x == "w":
print "blaw blaw blaw"
elif x == "a":
print "blaha blaha blaha"
elif x == "s":
print "blash blash blash"
elif x == "d":
print "blad blad blad"
else:
print x


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

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In windows you could use the msvcrt module:

This is a standard Windows-specific extension module. It defines a function kbhit() which checks whether a keyboard hit is present, and getch() which gets one character without echoing it.

I'm not sure however if it can work with these two combined keypresses

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Tkinter is probably best, but if you're doing something terminal-based ncurses is also an option. And if you're using graphics or a GUI, the library you're using (PyGame, GTK, Wx, Qt, Pyglet etc.) will have its own way of dealing with keyboard events.