Init python longest path implementation for DAG
Init python longest path implementation for DAG

logicchains/LPATHBench,logicchains/LPATHBench,logicchains/LPATHBench,logicchains/LPATHBench,logicchains/LPATHBench,logicchains/LPATHBench,logicchains/LPATHBench,logicchains/LPATHBench,logicchains/LPATHBench,logicchains/LPATHBench,logicchains/LPATHBench,logicchains/LPATHBench,logicchains/LPATHBench,logicchains/LPATHBench,logicchains/LPATHBench