import string
class keyboard:
    def __init__(self, canvas):
        tkeys = list(string.ascii_letters)
        self._keys = {}
        for i in tkeys:
            self._keys[i] = False
        canvas.bind("<KeyPress>", self.keypupd, add="+")
        canvas.bind("<KeyRelease>", self.keydupd, add="+")

    def keypupd(self, event):
        event = event.char
        if event in self._keys:
            self._keys[event] = True
        
    def keydupd(self, event):
        event = event.char
        if event in self._keys:
            self._keys[event] = False

    def getkeys(self):
        return self._keys