CODEWITHSUNDEEP
pythonclassdictionary
emmalyx
emmalyx

Reputation: 2356

Add to dict that's an attribute of a class

I have a class like this:

class MyClass:
    def __init__(self, id, names):
        self.id = id
        self.names = names

Later on, I'm doing this:

classlist = []
classlist.append(MyClass("1", {"Key1", "Value"})) #add first key-value pair
classlist[0].names["Key2"] = "New Value" #add second key-value pair

but it fails on the third line with TypeError: 'set' object does not support item assignment. I'm new to Python, please teach me how to do this correctly.

Upvotes: 2

Views: 171

Answers (2)

no1
no1

Reputation: 727

you should use ":" for dictionary!!

Upvotes: 0

sberry
sberry

Reputation: 132018

You are passing in a set, not a dictionary. It should be

classlist.append(MyClass("1", {"Key1": "Value"}))

Notice the : instead of , separating the Key1 and Value. {arg, arg, arg} is shorthand for creating a set.

Upvotes: 6

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