Seems like late homework...

https://www.researchgate.net/post/Can_someone_help_me_with_a_community_detection_algorithm_code

http://ieeexplore.ieee.org/document/6785689/

https://www.hindawi.com/journals/sp/2015/461362/

Article Real-time community detection in full social networks on a laptop

Article Dynamic Social Community Detection and Its Applications

I think NetworkX Python Package has the feature of community detection:

https://python-louvain.readthedocs.io/en/latest/ It uses the louvain method described in Fast unfolding of communities in large networks

https://github.com/taynaud/python-louvain

https://yoyoinwanderland.github.io/2017/08/08/Community-Detection-in-Python/

https://networkx.github.io/documentation/stable/reference/algorithms/community.html