code: def search_module(module, syspath=sys.path):
      
      lst = module.split(".")
      pkg, submodule = lst[0], ".".join(lst[1:])
      try:
          fileobj, filepath, descr = imp.find_module(pkg, syspath)
      except ImportError:
          return
      if submodule:  # recursive search
          return search_module(submodule, [filepath])
      return filepath
docs: Given a module name (possibly with dots) returns the corresponding
      filepath, or None, if the module cannot be found.
  
      :param module: (dotted) name of the Python module to look for
      :param syspath: a list of directories to search (default sys.path)