"unqualified exec is not allowed" error w/custom tag lib

Philip Semanchuk <[email protected]> Mon, 17 Apr 2006 23:34:20 -0400
Newsgroups	gmane.comp.python.spyce.general
Message-ID	<[email protected]>
Hi all,
First things first: I am really enjoying Spyce; it is making my 
development work a lot easier.

Today I came across a problem that I don't know what to make of, and 
I've narrowed it down to a very specific test case. My file test.spy 
(at the end of this message) makes use of a custom tag library called 
FooTagLibrary.spy. The custom tag lib is ultra-simple:
[[.tagcollection ]]

[[.begin name=DoNothing buffers=False singleton=True]]
[[\
pass
]]
[[.end]]


test.spy includes this tag lib and uses the DoNothing tag. The strange 
part is that if I define a Python function inside test.spy, including 
certain Python code in that function causes the Spyce compilation to 
error out with this message:
   Traceback (most recent call last):
   File "/usr/local/share/spyce-2.0.3/spyce.py", line 554, in __init__
     try: exec self.getCode() in self._codeenv
SyntaxError: unqualified exec is not allowed in function 'spyceProcess' 
it contains a nested function with free variables (<string>, line 39)

The troublesome code can be quite innocuous; a function body as simple 
as "return True" triggers what I'm seeing. The name of the function 
that I define doesn't appear to have any bearing on the problem. If I 
remove the reference to foo:DoNothing from test.spy, the problem goes 
away. I can't even begin to imagine what's happening here. Any 
suggestions would be appreciated.

CHeers
Philip

The contents of test.spy follow --

[[.taglib from=FooTagLibrary.spy as=foo]]
<html>
<head>
         <title>testing</title>
</head>
<body>
[[\
def trouble():
     # These cause the error --
     bool(0)
     #int(0)
     #str(0)
     #float(0)
     #return True
     #True == 1

     # These do not --
     #return 1
     #pass
     #print "boom"
     #1 == 1
     #return 1 == 1
     #return (1 == 1)
]]

<foo:DoNothing />

</body>
</html>



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