擅长:python、mysql、java
<pre><code>import random
visited = []
def random_key():
wGraph = {1: [[2, 2], [3, 4], [3, 3]],
3: [[3, 2], [5, 4], [7, 5]],
2: [[2, 1], [4, 4], [3, 6]],
4: [[3, 1], [4, 2], [1, 6], [5, 3]],
6: [[3, 2], [1, 4], [8, 5]],
5: [[7, 3], [8, 6], [9, 7]],
7: [9, 5]}
random_key = random.choice(wGraph.keys())
if random_key not in visited:
visited.append(random_key)
print visited
for e in range(7):
random_key()
</code></pre>