Python map and lambda functions: a sorting problem

Question

Can someone explain me why the result is ordered till range(6), and unordered from range(7) onwards?

nums = list(range(10))
print(set(map(lambda x: x*x, nums)))

Answer 1

In Python sets don't remember the order of elements.

Try using lists instead:

print(list(map(lambda x: x*x, nums)))
or
print(sorted(set(map(lambda x: x*x, nums)))) if you need to delete the duplicates.

Answer 2

Paolo De Nictolis
I think portpass meant using lists this way:
print(list(map(lambda x: x*x, nums)))

You could also use a list comprehension:
print([x*x for x in nums])

Answer 3

You're completely right, this functions:
nums = range(10)
print((list(map(lambda x: x*x, nums))))

Answer 4

You can't eliminate set, or it will return map as an object (try it). With sorted is OK. Thank you very much :)

Answer 5

Of course 'list(map(...'
Thanks!