uma_lista = [1, 2, 3, 4] * 1000
outra_lista = [3, 4, 5, 6] * 1000
 
from timeit import timeit
 
# executa 10 vezes cada teste
params = { 'number': 10, 'globals': globals() }
 
# imprime os tempos em segundos
# list comprehension
print(timeit('[elemento for elemento in uma_lista if elemento in outra_lista]', **params))
# set
print(timeit('set(uma_lista) & set(outra_lista)', **params))
# set + transformar o resultado em lista
print(timeit('list(set(uma_lista) & set(outra_lista))', **params))
 

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