linda.s wrote: > How can I know where a function such as abc is from (from which module)? > >>>> abc >>>> > <built-in function abc> > You could: 1. look it up in the index of the library reference (http://www.python.org/doc/current/lib/genindex.html), 2. try "pydoc", 3. examine abc.__module__ Let us know if none of those help. e.