print command don't work (subscripted) word[2:4]

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    gcmartijn> Why is this not working ?
    gcmartijn> bla = 'hondenriem'
    gcmartijn> print bla[0:4]  # correct ! (= hond)
    gcmartijn> print bla[3:2]  # nothing ! (= en)
    gcmartijn> print bla[6:3]  # nothing ! (= riem)

    gcmartijn> Why don't bla[3:2] and bla[6:3] won't work ?

Because those two examples define zero-length slices (left index <= right).
The second number in each slice specification is the ending index of the
slice, not the desired length.

    >>> bla = 'hondenriem'
    >>> print bla[0:4]
    hond
    >>> print bla[3:2]

    >>> print bla[2:3]
    n
    >>> print bla[6:3]

    >>> print bla[3:6]
    den
    >>> print bla[3:3]


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