Find two smallest elements in an unsorted array using only one pass i.e. O(n)

Question

Sigiloso · Accepted Answer

Initialize two variables which will the first and second elements in the array respectively. As you loop,  if current value is less than both then update both, if it's between the two then only update second.

Interview Answer · Answer

Here is my python code solution
def TwoSmallest(lst):
    tmp_list = [lst[0],lst[1]]
    for i in xrange(2,len(lst)):
    	maxi=max(tmp_list[0],tmp_list[1])
        if lst[i] < maxi :
        	tmp_list.remove(maxi)
        	tmp_list.append(lst[i])
    return tmp_list

Sigiloso · Answer

If currVal < smallest, 2ndSmallest = smallest and smallest = currVal
else if currVal < 2ndSmallest, 2ndSmallest = currVal

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