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40 lines
742 B
Python
Executable File
40 lines
742 B
Python
Executable File
#
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# Copyright (C) 2000 greg Landrum
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#
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""" tools for working with python slices
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"""
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def FindSliceBounds(slice,dim):
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""" makes the bounds of a slice explicit
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**Arguments**
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- slice: a Slice object
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- dim: the dimensions of the thing being sliced
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**Returns**
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a 3-tuple:
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1) the explicit beginning of the slice
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2) the explicit end of the slice
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3) the slice step
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"""
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res = [slice.start,slice.stop,slice.step]
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if res[0] is None:
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res[0] = 0
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elif res[0] < 0:
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res[0] = res[0] + dim
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if res[1] is None:
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res[1] = dim
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elif res[1] < 0:
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res[1] = res[1] + dim
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if res[2] is None:
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res[2] = 1
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return tuple(res)
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