Best way to check that you are at the beginning (the end) of an iterable?

[Chris Angelico]

[x] = ""

Traceback (most recent call last):

[x] = "a"
[x] = "ab"

Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
ValueError: too many values to unpack

Hey look, it's a new operator - the "assign-sole-result-of-iterable" operator!

x ,= "a"



ChrisA