List insert(i, x) : List Insert « List « Python

List insert(i, x)

List insert(i, x)
#Insert an item at a given position. The first argument is the index of the element 
#before which to insert, so a.insert(0, x) inserts at the front of the list, 
#and a.insert(len(a), x) is equivalent to a.append(x). 

a = [66.25, 333, 333, 1, 1234.5]

a.insert(2, -1)

print a

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