why is range() int only

[Skaperen]

the indexing use case being so dominant does not rule out other use cases. but a concise efficient implementation in C might be the reason. it does type check, and other checks. if it is in C then a type check is probably essential to avoid memory corruption that C is infamous for. i played around with implementing my own. it does reverse decrements, too. i have only tested floats. but it looks like numpy will be in my float use case. or i might scale the ints.