What is

the cyclomatic complexity of the following code?

def calculate_discount(price, is_member, season):
   discount = 0
   if price > 100:
      if is_member:
         if season == ‘summer’:
            discount = 0.2
         else:
            discount = 0.1
      else:
         if season == ‘winter:
            discount = 0.15
         else:
            discount = 0.05
   return price * (1 – discount)