if self.input_ in {'/' + self.keys['switch_to_play'], '/play'}:
self.switch_mode('play')
elif self.input_ in {'/' + self.keys['switch_to_study'], '/study'}:
if self.input_ in {'/' + self.keys['switch_to_play'], '/play'}:
self.switch_mode('play')
elif self.input_ in {'/' + self.keys['switch_to_study'], '/study'}: