Below is a method to enumerate Python modules located in a directory:

import pkgutil
def get_pkg_modules(pkg_path, recurse=False, add_prefix=''):
        Get modules of a package located at pkg_path
        @param  str  pkg_path    Path of package to inspect
        @param  bool recurse     Recursive inspection?
        @param  str  add_prefix  Add this prefix to results
        @return list List of modules located in package
    cmd = pkgutil.walk_packages if recurse else pkgutil.iter_modules
    return list(
        set([name for _, name, _ in cmd([pkg_path], add_prefix)])