การสร้างฟังก์ชันแบ่งกลุ่มสำหรับ A/B Test

def ab_segmentation(segment):
  # Build a for loop for each subsegment in marketing
  for subsegment in ____:
      print(subsegment)
      
      # Limit marketing to email and subsegment
      email = marketing[(marketing['marketing_channel'] == ____) & (marketing[segment] == ____)]

      subscribers = email.groupby(['user_id', 'variant'])['converted'].max()
      subscribers = pd.DataFrame(subscribers.unstack(level=1)) 
      control = subscribers['control'].dropna().astype(float)
      personalization = subscribers['personalization'].dropna().astype(float)

      print('lift:', ____) 
      print('t-statistic:', ____, '\n\n')