Function process

lib/sqlalchemy/engine/processors.py:51–81

(value: Optional[str])

    has_named_groups = bool(regexp.groupindex)

    def process(value: Optional[str]) -> Optional[_DT]:
        if value is None:
            return None
        else:
            try:
                m = rmatch(value)
            except TypeError as err:
                raise ValueError(
                    "Couldn't parse %s string '%r' "
                    "- value is not a string." % (type_.__name__, value)
                ) from err

            if m is None:
                raise ValueError(
                    "Couldn't parse %s string: "
                    "'%s'" % (type_.__name__, value)
                )
            if has_named_groups:
                groups = m.groupdict(0)
                return type_(
                    **dict(
                        list(
                            zip(
                                iter(groups.keys()),
                                list(map(int, iter(groups.values()))),
                            )
                        )
                    )
                )
            else:
                return type_(*list(map(int, m.groups(0))))

    return process