code: def ts_analysis_data():
      return pd.read_csv(
          os.path.join(
              os.path.dirname(__file__), "data/ts_analysis.tsv"
          ),
          sep="	",
          parse_dates=["date"],
      )
  
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 21 for calling a global function with example usage: ts_analysis_data() and returns: pd