Comparison between list()'s and lists' comprehension implementation.

list_comprehension.py

my_list = list(range(1000000))

for i in range(100):
    other_list = [elem for elem in my_list]

list_function.py

my_list = list(range(1000000))

for i in range(100):
    other_list = list(my_list)

results.txt

$ time python list_comprehension.py 
real	0m17.746s
user	0m14.489s
sys	0m1.827s

$ time python list_function.py 
real	0m4.266s
user	0m3.740s
sys	0m0.319s