如何將布爾函數應用於列表中的每個元素？

Question

def bool_gen(p):
   p = float(p)
   if p > 100 or p < 0:
     p = 0.5
   elif 1 <= p <= 100:
     p = p / 100

   return random.random() < p

def apply_discount(v, b):

    if b == True:
       v = v * 0.5
       return v
    elif b == False:
       return v


p = int(random.randint(0,200))
b = bool_gen(p)       
purchases_prices = [20,30,40,50]
have_discount = []
no_discount = []
for each_price in purchases_prices: 
   if b == True    
      have_discount.append(apply_discount(each_price,b))
        
   elif b == False:   
       no_discount.append(apply_discount(each_price,b))

我想將 bool_gen 應用於 purchase_prices 中的每個元素而不是整個列表。 發生什么了：

have_discount = [10, 15, 20] and no_discount = []

我在找什么：

have_discount = [10,20]  and no_discount = [30]

Answer 1

在循環內調用bool_gen() 。

for each_price in purchases_prices: 
    b = bool_gen(p)
    if b: 
        have_discount.append(apply_discount(each_price,b))
    else:   
        no_discount.append(apply_discount(each_price,b))