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Home/ Questions/Q 9259101
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Editorial Team
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Editorial Team
Asked: June 18, 20262026-06-18T12:34:28+00:00 2026-06-18T12:34:28+00:00

I have an instance that has a dict. how can i modify the dict

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I have an instance that has a dict. how can i modify the dict in a function, by the key from the dict?

class myclass:
    def __init__(self):
        self.mydict = {'number':0}

def myfunction(foo):
    foo.mydict[number] += 10 #<- doesnt work gives me 'global name number not defined' 


instance = myclass()
myfunction(instance)

hope you can help me,
thanks!

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  1. Editorial Team
    Editorial Team
    2026-06-18T12:34:30+00:00Added an answer on June 18, 2026 at 12:34 pm

    Actually, this has nothing to do with it being a class attribute:

    foo.mydict['number'] += 10 
    

    The key need to be a string.

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