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Guido van Rossum 1993-12-17 14:23:52 +00:00
parent 3cbc16d904
commit 7565b93414
8 changed files with 51 additions and 49 deletions
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5
Demo/classes/Range.py
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@ -16,7 +16,7 @@ def range(*a):
start, stop, step = a
else:
raise TypeError, 'range() needs 1-3 arguments'
return Range().init(start, stop, step)
return Range(start, stop, step)
# Class implementing a range object.
@ -26,14 +26,13 @@ def range(*a):
class Range:
# initialization -- should be called only by range() above
def init(self, start, stop, step):
def __init__(self, start, stop, step):
if step == 0:
raise ValueError, 'range() called with zero step'
self.start = start
self.stop = stop
self.step = step
self.len = max(0, int((self.stop - self.start) / self.step))
return self
# implement `x` and is also used by print x
def __repr__(self):