Can Python Module Locate Itself?

[sj]

Thanks all for the many useful suggestions.  

One of the reasons I placed the docs in comments is that I have a modified 
version of head which outputs the initial comment block of a file. Its 
smart enough to recognize c++, java, python and lisp commenting styles. On 
reflection I'm not sure this approach offers any advantage over the elegant 
and standard python doc string.  Also it would be easy to to update the 
modified head program to look for any initial doc strings.