Python integer incrementing with ++ [duplicate]
Simply put, the ++ and -- operators don't exist in Python because they wouldn't be operators, they would have to be statements. All namespace modification in Python is a statement, for simplicity and consistency. That's one of the design decisions. And because integers are immutable, the only way to 'change' a variable is by reassigning it.
Fortunately we have wonderful tools for the use-cases of ++ and -- in other languages, like enumerate() and itertools.count().