Python instance attribute not being recognized -

Python instance attribute not being recognized -

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i maintain on getting type error 2 answers

i have next code in python:

class state: def _init_(self): self.x=list([]) self.possiblechests=list([]) self.visitedchests=list([]) def checkkeys(self): print self.x def addkey(self,x): self.x.append(key) current_state=state() future_state=state() current_state.addkey(4)

when run next error:

attributeerror: state instance has no attribute 'x'

why 'x' not beingness recognized instance attribute?

you need double underscores around __init__:

def __init__(self):

otherwise, python treat function normal method , not __init__ special method.

python attributes instance