def power(item):
    return item * item

mpower = lambda x : x * x

def myfunc(item):
    return 2 * 3.14 * item * item

def under_3(item):
    return item < 3


list_input_a = [1, 2, 3, 4, 5]

output_a = map(power, list_input_a)
#output_a = [1, 4, 9, 16, 25]
output_c = map(myfunc, list_input_a)
output_d = map(mpower, list_input_a)
output_e = map(lambda x : x * x, list_input_a)
print("# map() 함수의 실행결과")
print("map(power, list_input_a):", output_a)
print("map(power, list_input_a):", list(output_a))
print("map(power, list_input_a):", list(output_c))
print("map(mpower, list_input_a):", list(output_d))
print("map(lambda x : x * x, list_input_a):", list(output_e))
print()

output_b = filter(under_3, list_input_a)
print("# filter() 함수의 실행 결과")
print("filter(under_3, output_b):", output_b)
print("filter(under_3, output_b):", list(output_b))