CODEWITHSUNDEEP
pythonoop
dkiswanto
dkiswanto

Reputation: 192

How to recreate / reinstantiate an object in python 2.7

I am looking for a way to recreate / reinstantiate an object in python, because I want the object to have a default attribute in each loop. 

for case in all_case:

    # I want an object to be newly created  / reinstantiated in each loop 
    pda = PushDownAutomata()
    print pda.evaluate(case, debug=False)

    # I already added "del pda" but it does not work

How can I achieve it?

Upvotes: 0

Views: 2334

Answers (2)

dkiswanto
dkiswanto

Reputation: 192

The problem was fixed by the following code. I was using a class variable before - changing it to an instance variable solved the issue:

# before (class variable)
class PushDownAutomata():
    stack = []
    state = 'q1'

# after (instance variable)
class PushDownAutomata():
    def __init__():
        self.stack = []
        self.state = 'q1'

Upvotes: 1

MatanRubin
MatanRubin

Reputation: 1085

Note that class attributes are not the same as instance attributes. for example:

class A(object):

    a = None # this is a class attribute

    def __init__(self, b):
        self.b = b # b is an instance attribute

Upvotes: 3

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