old_contents: #here
  
new_contents: #Griffin Calme
  #Group 15, week 8 activity
  #Kaplan Meier survival curve
  
  import pandas as pd
  from lifelines import KaplanMeierFitter
  import matplotlib.pyplot as plt
  kmf = KaplanMeierFitter()
  
  df = pd.DataFrame.from_csv('wk8gp15KapMeier.csv')
  
  print(df)
  
  groups = df['Group']
  ix = (groups == 2)
  
  T = df['SERIAL TIME (years)']
  E = df['STATUS']
  
  kmf.fit(T[~ix], E[~ix], label='1')
  ax = kmf.plot()
  
  kmf.fit(T[ix], E[ix], label='2')
  kmf.plot(ax=ax, ci_force_lines=False)
  
  plt.show()
  
subject: Update KaplanMeierDrugLitAssigment.py