Data structure (Python)

Description : CDLL remove: Testing with random integers

Input : CDLL [-74811 <-> 75232 <-> 75232 <-> 15641 <-> -74811 <-> 83353 <-> 83353 <-> 88788 <-> 88788 <-> -74811 <-> 83353 <-> 15641 <-> 15641 <-> 75232 <-> 75232 <-> 15641 <-> 15641 <-> 15641 <-> 78912] Remove 78912

Expected : CDLL [-74811 <-> 75232 <-> 75232 <-> 15641 <-> -74811 <-> 83353 <-> 83353 <-> 88788 <-> 88788 <-> -74811 <-> 83353 <-> 15641 <-> 15641 <-> 75232 <-> 75232 <-> 15641 <-> 15641 <-> 15641] True

Student : CDLL [-74811 <-> 75232 <-> 75232 <-> 15641 <-> -74811 <-> 83353 <-> 83353 <-> 88788 <-> 88788 <-> -74811 <-> 83353 <-> 15641 <-> 15641 <-> 75232 <-> 75232 <-> 15641 <-> 15641 <-> 15641 <-> 78912] False

Returned list has a different length

Test Failed: False is not true