# Original list of numbers.
numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

# For loop to double the numbers in a list.
doubled_numbers = []
for number in numbers:
  doubled_numbers.append(number * 2)

# Rewrite using list comprehension.
# Syntax:
#   list_object = [expression_on_item for_item_in_iterable]
doubled_numbers = [number * 2 for number in numbers]

print(doubled_numbers) # Output: [2, 4, 6, 8, 10, 12, 14, 16, 18, 20]