Data Hiding

Question

Data Hiding
We are working on a game. Our Player class has name and private _lives attributes.
The hit() method should decrease the lives of the player by 1. In case the lives equal to 0, it should output "Game Over".
Complete the hit() method to make the program work as expected.

class Player:
def __init__(self, name, lives):
self.name = name
self._lives = lives

def hit(self):
#your code goes here
if self._lives == 0:
print('Game Over')
else:
return self._lives-=1

p = Player("Cyberpunk77", 4)
p.hit()
p.hit()
p.hit()

File "<ipython-input-298-8696dd8489ab>", line 11
return int(self._lives)-=1
^
SyntaxError: invalid syntax

Answer 1

You should not return decreased lives. Even if you need it, Python interpreter sees it as invalid syntax; then you need to do decreasing of/assigning to _lives and returning it as different statements.
Hint: the problem is in `return self._lives-=1`.

Answer 2

Thank you so much.
Now I got the answer
here is the correct answer:
class Player:
def __init__(self, name, lives):
self.name = name
self._lives = lives

def hit(self):
self._lives -= 1
if self._lives == 0:
print('Game Over')
#your code goes here

p = Player("Cyberpunk77", 3)
p.hit()
p.hit()
p.hit()

Answer 3

Mukhammad Sadriddinov, correct! You even fixed a mistake I did not spot!

Answer 4

I don't understand why it couldn't be:

def hit(self):
if self._lives > 0:
self._lives -= 1
else:
print('Game Over')

Answer 5

class Player:
def __init__(self, name, lives):
self.name = name
self._lives = lives

def hit(self):
# your code goes here
if self._lives == 0:
print('Game Over')
else:
self._lives -= 1
return self._lives

p = Player("Cyberpunk77", 4)
print(p.hit())
print(p.hit())
print(p.hit())

Answer 6

class Player:
def __init__(self, name, lives):
self.name = name
self._lives = lives
def hit(self):
self._lives -= 1
@property
def isAlive(self):
return self._lives > 0
p = Player("Cyberpunk77", int(input()))
i = 1
while True:
p.hit()
print("Hit # " + str(i))
i += 1
if not p.isAlive:
print("Game Over")
break

Answer 7

class Player:
def __init__(self, name, lives):
self.name = name
self._lives = lives

def hit(self):
self._lives -= 1
if self._lives <= 0:
print('Game Over')

return self._lives

p = Player("Cyberpunk77", 3)
p.hit()
p.hit()
p.hit()