Attribute error object has no attribute

Question

I just wanted to try some classes then I am stuck in Basics ..My code is below :

class Prob():
 def _init_(self):
 self._count = 0
 def _ProbCal(self):
 print(self._count)
d = Prob()
d._ProbCal()

error is :

Traceback (most recent call last):
 File "ProbCalculation.py", line 8, in <module>
 d._ProbCal()
 File "ProbCalculation.py", line 6, in _ProbCal
 print(self._count)
AttributeError: 'Prob' object has no attribute '_count'

• Bhargav Rao: def __init__(self) .. Double underscore

Answer 1

Your __init__ function requires double underscores at the start and end of the method name:

class Prob():
 def __init__(self):
 self._count = 0
 def _ProbCal(self):
 print(self._count)
d = Prob()
d._ProbCal()

• Harish: thank you very much , I feel so silly for this stupid mistake

Answer 2

_init_ Must have double underscores like so:

class Prob():
 def __init__(self):
 self._count = 0
 def _ProbCal(self):
 print(self._count)
d = Prob()
d._ProbCal()

• Harish: thank you very much , I feel so silly for this stupid mistake