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1883
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aaronmk
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# Lists
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7007
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aaronmk
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import operator
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2962
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aaronmk
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def is_seq(value):
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return (isinstance(value, list) or isinstance(value, tuple)
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or isinstance(value, set))
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2415
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aaronmk
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2963
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aaronmk
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def mk_seq(value):
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if not is_seq(value): value = [value]
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return value
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2669
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aaronmk
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def clear(list_):
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while True:
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try: list_.pop()
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except IndexError: break
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7007
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aaronmk
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def and_(list_): return reduce(operator.and_, map(bool, list_), True)
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def or_(list_): return reduce(operator.or_, map(bool, list_), False)
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2415
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aaronmk
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def uniqify(list_):
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2699
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aaronmk
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'''Removes duplicates from an iterable. Preserves order.'''
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2415
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aaronmk
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existing = set()
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new_list = []
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for value in list_:
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if value not in existing:
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existing.add(value)
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new_list.append(value)
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return new_list
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