<｜begin▁of▁sentence｜>### Instruction:
Given a networkx erdos_renyi_graph with params n=500, p=0.1, can you use PageRankBasedSampler to sample a subgraph which has 50 nodes and compute the average shortest path length of the sampled graph?
### Response:
import networkx as nx
from littleballoffur import PageRankBasedSampler

G = nx.gnp_random_graph(n=500, p=0.1)

sampler = PageRankBasedSampler(50)

sampler_G = sampler.sample(G)

result = nx.average_shortest_path_length(sampler_G)

print(result)
<|EOT|>
