YOU SAID:

class Ball: def bounce(self): if self.direction == "down": self.direction = "up"

INTO JAPANESE

クラス Ball: def bounce(self): self.direction == "down": self.direction = "up" の場合

BACK INTO ENGLISH

class Ball: def bounce(self): if self.direction == "down": self.direction = "up"

INTO JAPANESE

クラス Ball: def bounce(self): self.direction == "down": self.direction = "up" の場合

BACK INTO ENGLISH

class Ball: def bounce(self): if self.direction == "down": self.direction = "up"