def show_letter(letter, text_color=None, back_color=None):
 text_color = (text_color or [255, 255, 255])
 back_color = (back_color or [0, 0, 0])
 _sensehat.show_letter(letter, text_color, back_color)
 return {'letter': letter}

def show_letter ( letter , text_color = None , back_color = None ) : text_color = ( text_color or [ 255 , 255 , 255 ] ) back_color = ( back_color or [ 0 , 0 , 0 ] ) _sensehat . show_letter ( letter , text_color , back_color ) return { 'letter' : letter }
displays a single letter on the led matrix .