from timeit import timeit
for i in range(3):
print('set([1, 2, 1])', timeit("set([1, 2, 1])", number=10000))
print('set((1, 2, 1))', timeit("set((1, 2, 1))", number=10000))
print(' {1, 2, 1} ', timeit("{1, 2, 1}", number=10000))
print('dict() ', timeit("dict()", number=10000))
print(' {} ', timeit("{}", number=10000))
print('list() ', timeit("list()", number=10000))
print(' [] ', timeit("[]", number=10000))
print('\n\n')
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set([1, 2, 1]) 0.0020868307910859585
set((1, 2, 1)) 0.0015521119348704815
{1, 2, 1} 0.0008337120525538921
dict() 0.0012432034127414227
{} 0.0007361182942986488
list() 0.0008235680870711803
[] 0.00020625442266464233
set([1, 2, 1]) 0.002082482911646366
set((1, 2, 1)) 0.0015463260933756828
{1, 2, 1} 0.000822627916932106
dict() 0.0011396999470889568
{} 0.0006403210572898388
list() 0.0008327891118824482
[] 0.0002697599120438099
set([1, 2, 1]) 0.0020835879258811474
set((1, 2, 1)) 0.0015274039469659328
{1, 2, 1} 0.0008305166848003864
dict() 0.0011399425566196442
{} 0.0006374577060341835
list() 0.0008049490861594677
[] 0.000206642784178257