skeleton class needs working instantiation guard

[hshivaraj]

That peculiar. Could you post your class Point again?
I dont that error message, and see the expected behaviour.

b = Point(0.5, 3, -7)

Output:
Traceback (most recent call last):
  File "main.py", line 41, in <module>
    b = Point(0.5, 3, -7)
  File "main.py", line 4, in __init__
    self.x = x
  File "main.py", line 17, in x
    raise AttributeError("x must be an integer")
AttributeError: x must be an integer
exited with non-zero status