SageMathGraphs.ipynb

Kernel: SageMath 10.6

g=Graph([[1..4],[[1,2],[2,3],[2,4],[3,4]]])
g

g.degree_sequence()

[3, 2, 2, 1]

DiGraph([[1..5],[(1,2),(2,3),(3,4),(4,1),(4,5),(2,1)]])