Hi, 

   I am new to Python, and I believe it's an easy question. I know R and Matlab.

************
>>> x=[1,2,3,4,5,6,7]
>>> x[0]
1
>>> x[1:5]
[2, 3, 4, 5]
*************

    My question is: what does x[1:5] mean? By Python's convention, the first 
element of a list is indexed as "0". Doesn't x[1:5] mean a sub-list of x, 
indexed 1,2,3,4,5? If I am right, it should print [2,3,4,5,6]. Why does it 
print only [2,3,4,5]?

   Thanks!!

John
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