On approximately 11/3/2008 11:55 AM, came the following characters from
the keyboard of Tim Chase:
For making a literal tuple, parentheses are irrelevant; only the
commas matter:
I don't think I'd go so far as to say that the parentheses around
tuples are *irrelevant*...maybe just relevant in select contexts
>>> def foo(*args):
... for i, arg in enumerate(args):
... print i, arg
...
>>> foo(1,2)
0 1
1 2
>>> foo((1,2)) # these parens are pretty important :)
0 (1, 2)
pedantically-grinning-ducktyping-and-running-ly yers,
I'll see your pedantry and raise you one:
>>> foo()
>>> foo(())
0 ()
And just because another "tuples without parens" case exists:
>>> foo(,)
File "<stdin>", line 1
foo(,)
^
SyntaxError: invalid syntax
To maintain the poker theme, I'd say "You raised, and I call" but my
call fails :-P
-tkc
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I'm glad you guys had this thread, which I read with interest and some
amusement back when it happened. I am an experienced programmer, but a
relative newcomer to Python.
And so it was, the last couple nights, that I spent much time looking
for why my CherryPy configuration didn't work, and after much searching
of the CherryPy documentation for a tracing technique (which I still
wish I could find), I finally hacked the code to add an extra pprint.
Even after that, I focused on the wrong data in the pprint output.
At long last, I discovered that somehow my hash-of-hashes was mostly a
hash-of-hashes, but there was a tuple in there that contained a hash
too! Now how did that get in there?
conf['/path'] = {
'item1': 'value1',
'item2': 'value2',
},
So I was focusing on the items and values of the pprint, and they were
all correct. But this tuple clearly didn't belong, but my brain was
expecting that tuples would be surrounded by () in source...
--
Glenn -- http://nevcal.com/
===========================
A protocol is complete when there is nothing left to remove.
-- Stuart Cheshire, Apple Computer, regarding Zero Configuration Networking
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