def _match_lhs(cp, rules):
    """Get rules with a left-hand side matching the given ComplexPattern."""
    rule_matches = []
    for rule in rules:
        reactant_pattern = rule.rule_expression.reactant_pattern
        for rule_cp in reactant_pattern.complex_patterns:
            if _cp_embeds_into(rule_cp, cp):
                rule_matches.append(rule)
                break
    return rule_matches
def _match_lhs ( cp , rules ) : rule_matches = [ ] for rule in rules : reactant_pattern = rule . rule_expression . reactant_pattern for rule_cp in reactant_pattern . complex_patterns : if _cp_embeds_into ( rule_cp , cp ) : rule_matches . append ( rule ) break return rule_matches
Get rules with a left-hand side matching the given ComplexPattern.