CODEWITHSUNDEEP
python
Chen Wei
Chen Wei

Reputation: 402

How to update a value after it is returned in python

Consider this piece of code, wondering would it be possible to return a value before it gets updated.

class A:

    def __init__(self):
         self.n = 0

    def get_next(self):
         return self.n++ # Return its current value. after it gets returned, update n. 

a = A()
a.get_next() # return 0
a.get_next() # return 1

Upvotes: 2

Views: 42

Answers (1)

Daniel Walker
Daniel Walker

Reputation: 6760

This'll work:

def get_next(self):
    old_value = self.n
    self.n += 1
    return old_value

Upvotes: 1

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