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85 lines
1.1 KiB
Python
85 lines
1.1 KiB
Python
x = 1
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assert x == 1
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x = 1, 2, 3
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assert x == (1, 2, 3)
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x, y = 1, 2
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assert x == 1
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assert y == 2
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x, y = (y, x)
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assert x == 2
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assert y == 1
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((x, y), z) = ((1, 2), 3)
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assert (x, y, z) == (1, 2, 3)
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q = (1, 2, 3)
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(x, y, z) = q
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assert y == q[1]
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x = (a, b, c) = y = q
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assert (a, b, c) == q
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assert x == q
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assert y == q
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a, *b = q
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print(a)
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print(b)
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assert a == 1
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assert b == [2, 3]
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a, *b, c, d = q
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print(a)
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print(b)
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assert a == 1
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assert b == []
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assert c == 2
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assert d == 3
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a, = [1]
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assert a == 1
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def g():
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yield 1337
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yield 42
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a, b = g()
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assert a == 1337
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assert b == 42
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# Variable annotations:
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a: bool
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b: bool = False
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assert a == 1337
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assert b == False
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# PEP 649: In Python 3.14, __annotations__ is not automatically defined at module level
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# Accessing it raises NameError
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from testutils import assert_raises
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with assert_raises(NameError):
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__annotations__
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# Use __annotate__ to get annotations (PEP 649)
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assert callable(__annotate__)
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annotations = __annotate__(1) # 1 = FORMAT_VALUE
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assert annotations['a'] == bool
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assert annotations['b'] == bool
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n = 0
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def a():
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global n
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n += 1
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return [0]
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a()[0] += 1
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assert n == 1
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