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22 lines
443 B
Python
22 lines
443 B
Python
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try:
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frozenset
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except NameError:
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print("SKIP")
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import sys
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sys.exit()
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l = [1, 2, 3, 4]
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s = frozenset(l)
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outs = [s.difference(),
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s.difference(frozenset({1})),
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s.difference(frozenset({1}), [1, 2]),
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s.difference(frozenset({1}), {1, 2}, {2, 3})]
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for out in outs:
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print(type(out), sorted(out))
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s = frozenset(l)
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try:
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print(s.difference_update({1}))
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except AttributeError:
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print("AttributeError")
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