human
I wrote the below code

    import sqlalchemy.orm
    if isinstance(statement, sqlalchemy.orm.Query):
        if (bind is None):
            bind = statement.session.get_bind(statement._mapper_zero_or_none())
        statement = statement.statement
    elif (bind is None):
        bind = statement.bind
    dialect = bind.dialect
    compiler = statement._compiler(dialect)
    class LiteralCompiler(compiler.__class__, ):
        def visit_bindparam(self, bindparam, within_columns_clause=False, literal_binds=False, **kwargs):
            return super(LiteralCompiler, self).render_literal_bindparam(bindparam, within_columns_clause=within_columns_clause, literal_binds=literal_binds, **kwargs)
        def render_literal_value(self, value, type_):
            'Render    the    value    of    a    bind    parameter    as    a    quoted    literal.\n\n                                                This    is    used    for    statement    sections    that    do    not    accept    bind    paramters\n                                                on    the    target    driver/database.\n\n                                                This    should    be    implemented    by    subclasses    using    the    quoting    services\n                                                of    the    DBAPI.\n\n                                                '
            if isinstance(value, string_types):
                value = value.replace("'", "''")
                return ("'%s'" % value)
            elif (value is None):
                return 'NULL'
            elif isinstance(value, (float, int, long)):
                return repr(value)
            elif isinstance(value, decimal.Decimal):
                return str(value)
            elif isinstance(value, datetime.datetime):
                return ("TO_DATE('%s','YYYY-MM-DD    HH24:MI:SS')" % value.strftime('%Y-%m-%d    %H:%M:%S'))
            else:
                raise NotImplementedError(("Don't    know    how    to    literal-quote    value    %r" % value))
    compiler =...

What's a good function header?

=====
Here's a good function header?
assistant
#Here's a good function header.

def printquery(statement, bind=None):