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def set_discard():
"""
>>> sorted(set_discard())
[1, 2]
"""
s = set([1,2,3])
s.discard(3)
return s
def set_discard_missing():
"""
>>> sorted(set_discard_missing())
[1, 2, 3]
"""
s = set([1,2,3])
s.discard(4)
return s
def set_discard_set():
"""
>>> s = set_discard_set()
>>> len(s)
1
>>> sorted(s.pop())
[1, 2]
"""
s = set([frozenset([1,2]), frozenset([2,3])])
s.discard(set([2,3]))
return s
def set_remove():
"""
>>> sorted(set_remove())
[1, 2]
"""
s = set([1,2,3])
s.remove(3)
return s
def set_remove_missing():
"""
>>> sorted(set_remove_missing())
Traceback (most recent call last):
KeyError: 4
"""
s = set([1,2,3])
s.remove(4)
return s
def set_remove_set():
"""
>>> s = set_remove_set()
>>> len(s)
1
>>> sorted(s.pop())
[1, 2]
"""
s = set([frozenset([1,2]), frozenset([2,3])])
s.remove(set([2,3]))
return s
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