Lambda , map and percentage discount in Python

''' We need to apply a discount for customers who purchased more than 500 dollars worth of product – they’re starting to complain it hasn’t been applied. They need to get 10% off on their orders.

Can you quickly apply a discount? Store the new prices in a list called discounted_subtotals. '''

subtotals = [15.98, 899.97, 799.97, 117.96, 5.99, 599.99]
discounted_subtotals = list(map(lambda x: x - (x*0.1) if x > 500  else x, subtotals))
discounted_subtotals


# OR
discounted_subtotals_ = list(map(lambda x: x * 0.9 if x > 500  else x, subtotals))
discounted_subtotals_