blob: 26976116f33f25a4c5308cc5cd0638a4df51a2e0 (
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def report(s):
l = list(s)
l.sort()
print(l)
l = [1, 2, 3, 4]
s = set(l)
outs = [s.difference(),
s.difference({1}),
s.difference({1}, [1, 2]),
s.difference({1}, {1, 2}, {2, 3})]
for out in outs:
report(out)
s = set(l)
print(s.difference_update())
report(s)
print(s.difference_update({1}))
report(s)
print(s.difference_update({1}, [2]))
report(s)
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