python django how to remove last element from a list or string

python django how to remove last element from a list or string.
python django how to get all elements except last one.

>>> a = range(6)
>>> a
[0, 1, 2, 3, 4, 5]

>>> a[0:-1] <----- get all elements, except 5
[0, 1, 2, 3, 4]

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>>> name = "python&"
>>> name
'python&'

>>> name[:-1] <----- get all elements, except &
'python'


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