import sys

my_list = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j']

list_comprehension = [x for x in my_list]
set_comprehension = {x for x in my_list}
gen_expression = (x for x in my_list) # the language name for these is generator expressions, not generator comprehensions

print(list_comprehension)
print(type(list_comprehension))
print(sys.getsizeof(list_comprehension))
print()

print(set_comprehension)
print(type(set_comprehension))
print(sys.getsizeof(set_comprehension))
print()

print(gen_expression)
print(type(gen_expression))
print(sys.getsizeof(gen_expression))
for val in gen_expression:
    print(val)