On 2016-02-03 13:24, Ben Finney wrote:
You have discovered the difference between an iterable (an object you
can iterate over with ‘for’), versus a sequence (an object whose items
remain in place and can be iterated many times).
Every sequence is an iterable, but not vice versa.
File objects are iterables, but not sequences. Each time you ask for
the
next item, you can't ask the file object for that item again; it is
“consumed” by the act of iteration.
How does a dict fit into this scheme?
Is it a sequence? It is an iterable (in that for key in d: works
although not in a predictable manner and for this reason I tend NOT to
think of it as a sequence.)
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