how to test if something is a sequence?

[Gribouillis]

what will that do if obj is a set? my thinking of a set is that it is iterable but it is not a sequence.

>>> from collections.abc import Iterable, Sequence
>>> isinstance(set(), Iterable)
True
>>> isinstance(set(), Sequence)
False
>>> 

What is a sequence in your view? Is it snippsat's definition or is it the interface of collections.abc.Sequence or do you have your own definition?

Another question is what do you want to do with this? For what purpose do you test if something is a sequence in your code?

[Skaperen]

that is what my thought is for how a set relates to Iterable and Sequence.

the goal involves argument testing in a wrapper script. i also need to test if it is mutable (there go str and bytes).