[Pyrex] Pyrex idioms and optimizations?

[Lenard Lindstrom]

William Stein wrote:
> Something that is valid in Pyrex but we think should not
> be valid is the following:
>
> # This is a complete file:
> ################
>
> def foo(a,b):
>    print a + b + c
>
> ################
>
> In Pyrex it compiles fine.  In SageX it gives an error
> message that c is not defined.  This avoids countless
> runtime errors.
>
>   
This is valid Python, though not pretty. c is a global variable. Just 
assign a value to c before calling foo. But Pyrex has a bug:

 >>> import foo
 >>> foo.c = 12
 >>> foo.foo(1, 2)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "foo.pyx", line 2, in foo.foo
    print a + b + c
NameError: c

-- 
Lenard Lindstrom
<len-l at telus.net>