PEP 276 Simple Iterator for ints

[Rainer Deyke]

"Skip Montanaro" <skip at pobox.com> wrote in message
news:mailman.1005730219.6744.python-list at python.org...
> Though after reading the remainder of the thread, I like the Haskell
syntax
> best.

One thing bothers me about the Haskell syntax: using it to generate
sequences of less than three elements just looks wrong.

[1, 2, ... 3] # This is obviously [1, 2, 3].
[1, 2, ... 2] # What is this?  [1, 2]?
[1, 2, ... 1] # [1]?
[1, 2, ... 0] # []?

Another thing that bothers me is that I'm it's not obvious how the elements
are evaluated.  This is not an issue in Haskell, but it is in Python:

def f(n):
  print n
  return n

for i in [f(0), f(1), ... f(5)]: pass

I assume that this prints 0, 1, and 5.  That makes sense from one
perspective, but doesn't make sense at all from another perspective.
Another example:

for i in [g() + 0, g() + 1, ... g() + 13]: pass

How often is 'g' called?  Once?  3 times?  14 times?


--
Rainer Deyke (root at rainerdeyke.com)
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"In ihren Reihen zu stehen heisst unter Feinden zu kaempfen" - Abigor