python 实现最短路 ---地杰斯特拉

然而我还是不会怎么画图，怎么把矩阵拿图画出来然后连在一起什么的；

from scipy.misc import imsave
import numpy as np
_=float('inf')
def dijkstra(graph,n):
	dis=[0]*n
	vis=[False]*n
	pre=[0]*n
	vis[0]=True
	k=0
	for i in range(n):
		dis[i]=graph[k][i]

	for j in range(n-1):
		mini=_
		for i in range(n):
			if dis[i]dis[k]+graph[k][i] and not vis[i]:
				dis[i]=dis[k]+graph[k][i]
				pre[i]=k
	return dis

if __name__=='__main__':
	n=6
	graph=[
			[0,6,3,_,_,_],
			[6,0,2,5,_,_],
			[3,2,0,3,4,_],
			[_,5,3,0,2,3],
			[_,_,4,2,0,5],
			[_,_,_,3,5,0],
			]
	dis=dijkstra(graph,n)
	print(dis)