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Mirza Gogic4,342 Points
Why is + ["list item"] different than += ["list item"]
Why is + ["list item"] different than += ["list item"].
Why is += ["list item"] permanent? and just + ["list item"] is not?
By using the += compound operator, you are assigning the result of the operation to the variable. If you were to just use the + operator, you would get the result of that operation, but it wouldn't be saved into that variable. an example in the shell:
>>> a = 10 >>> a + 5 15 >>> a 10 >>> a += 5 >>> a 15