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().
The fixed types uint8_t, uint16_t, uint32_t and uint64_t are equal respectively to (in most cases depending on the platform & compiler): unsigned char, unsigned short, unsigned int and unsigned long long.
The fixed types were introduced to be just that, fixed types independent of the platform.