1791. Find Center of Star Graph.py

class Solution:
    def findCenter(self, edges: List[List[int]]) -> int:
        graph={}
        for u,v in edges:
            if u not in graph:
                graph[u]=[]
            if v not in graph:
                graph[v]=[]
            graph[u].append(v)
            graph[v].append(u)
        for node in graph:
            if len(graph[node]) == len(edges):
                return node