code: def build_uri(orig_uriparts, kwargs):
      
      uriparts = []
      for uripart in orig_uriparts:
          # If this part matches a keyword argument (starting with _), use
          # the supplied value. Otherwise, just use the part.
          if uripart.startswith("_"):
              part = (str(kwargs.pop(uripart, uripart)))
          else:
              part = uripart
          uriparts.append(part)
      uri = '/'.join(uriparts)
  
      # If an id kwarg is present and there is no id to fill in in
      # the list of uriparts, assume the id goes at the end.
      id = kwargs.pop('id', None)
      if id:
          uri += "/%s" % (id)
  
      return uri
docs: Build the URI from the original uriparts and kwargs. Modifies kwargs.