What's wrong with that comment?

[Gabriel Genellina]

En Tue, 20 May 2008 16:22:10 -0300, Joe P. Cool  
<joe.p.cool at googlemail.com> escribió:
> Ludwig Miniatur wrote:
>> For example:
>> #!/usr/bin/env python
>>
>> from parser import suite, ast2list
>> fh = file(__file__)
>> s = fh.read()
>> fh.close()
>> ast = suite(s)
>>
>> while False:
>>   print "hello world"
>> # comment
>>
>> Looks like a little bug in parser; but what I don't understand is that
>> I thought parser was build with the current syntax of python.
>
> I didn't read the grammar but I assume that Python grammar requires a
> comment to have the form #.*<end-of-line>.
>>
>> So, why can python run the script (an it can if you comment out the
>> line "ast = suite(s)") but parser can't?
>
> The interpreter probably appends a newline after the input stream as a
> friendly service :)

Something like that. The last line of source *must* end in a newline (be  
it a comment or not); this is a known limitation. See py_compile.py for an  
example.

-- 
Gabriel Genellina