def in_field(self, field_name, *field_vals, **field_kwargs):
field_name = self._normalize_field_name(field_name)<EOL>fv = make_list(field_vals[<NUM_LIT:0>]) if field_vals else None<EOL>if field_kwargs:<EOL><INDENT>for k in field_kwargs:<EOL><INDENT>if not field_kwargs[k]:<EOL><INDENT>raise ValueError("<STR_LIT>")<EOL><DEDENT>field_kwargs[k] = make_list(field_kwargs[k])<EOL><DEDENT><DEDENT>else:<EOL><INDENT>if not fv: self.can_get = False<EOL><DEDENT>self.fields_where.append(field_name, ["<STR_LIT>", field_name, fv, field_kwargs])<EOL>return self<EOL>
field_vals -- list -- a list of field_val values