1# ticket: 544
2
3def count(i=[0]):
4    i[0] += 1
5    return i[0]
6
7def test(x):
8    """
9    >>> def py_count(i=[0]):
10    ...     i[0] += 1
11    ...     return i[0]
12    >>> 1 in (py_count(), py_count(), py_count(), py_count())
13    True
14    >>> 4 in (py_count(), py_count(), py_count(), py_count())
15    False
16    >>> 12 in (py_count(), py_count(), py_count(), py_count())
17    True
18
19    >>> test(1)
20    True
21    >>> test(4)
22    False
23    >>> test(12)
24    True
25    """
26    return x in (count(), count(), count(), count())
27