List vs Generator

list_generator.py

>>> import sys
>>> my_generator_list = (i for i in range(100000))
>>> print(f"My generator is {sys.getsizeof(my_generator_list)} bytes")
My generator is 128 bytes

>>> timeit(my_generator_list)
10000000 loops, best of 5: 32 ns per loop
  
>>> my_list = [i for i in range(100000)]
>>> print(f"My list is {sys.getsizeof(my_list)} bytes")
My list is 824472 bytes

>>> timeit(my_list)
10000000 loops, best of 5: 34.5 ns per loop