text: import pandas as pd
  import os
  perf = pd.read_pickle('workshop-files/buy_and_hodl_exercise_b.pickle') # read in perf DataFrame
  perf.to_csv('workshop-files/buy_and_hodl_exercise_b.csv')
  print(perf.head())
  
  
  #data = pd.read_csv('workshop-files/buy_btc_simple_out.csv')
  #data.columns
  