code: def network_data():
      return pd.read_csv(
          os.path.join(os.path.dirname(__file__), "data/network.csv")
      )
  
imports: import getpass
  import os
  import random
  import string
  import unittest
  import numpy
  import pandas
  import pytest
  from pandas.tseries.offsets import Day
  from past.utils import old_div
  from six import PY3
label_desc: Use image node_id 18 for calling a global function with example usage: network_data() and returns: pd