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# unpack sequences
a, = 1, ; print(a)
a, b = 2, 3 ; print(a, b)
a, b, c = 1, 2, 3; print(a, b, c)
a, = range(1); print(a)
a, b = range(2); print(a, b)
a, b, c = range(3); print(a, b, c)
(a) = range(1); print(a)
(a,) = range(1); print(a)
(a, b) = range(2); print(a, b)
(a, b, c) = range(3); print(a, b, c)
(a, (b, c)) = [-1, range(2)]; print(a, b, c)
# lists
[] = []
[a] = range(1); print(a)
[a, b] = range(2); print(a, b)
[a, b, c] = range(3); print(a, b, c)
# with star
*a, = () ; print(a)
*a, = 4, ; print(a)
*a, = 5, 6 ; print(a)
*a, b = 7, ; print(a, b)
*a, b = 8, 9 ; print(a, b)
*a, b = 10, 11, 12 ; print(a, b)
a, *b = 13, ; print(a, b)
a, *b = 14, 15 ; print(a, b)
a, *b = 16, 17, 18 ; print(a, b)
a, *b, c = 19, 20 ; print(a, b)
a, *b, c = 21, 22, 23 ; print(a, b)
a, *b, c = 24, 25, 26, 27 ; print(a, b)
a = [28, 29]
*b, = a
print(a, b, a == b, a is b)
[*a] = [1, 2, 3]
print(a)
try:
a, *b, c = (30,)
except ValueError:
print("ValueError")
# with star and generic iterator
*a, = range(5) ; print(a)
*a, b = range(5) ; print(a, b)
*a, b, c = range(5) ; print(a, b, c)
a, *b = range(5) ; print(a, b)
a, *b, c = range(5) ; print(a, b, c)
a, *b, c, d = range(5) ; print(a, b, c, d)
a, b, *c = range(5) ; print(a, b, c)
a, b, *c, d = range(5) ; print(a, b, c, d)
a, b, *c, d, e = range(5) ; print(a, b, c, d, e)
*a, = [x * 2 for x in [1, 2, 3, 4]] ; print(a)
*a, b = [x * 2 for x in [1, 2, 3, 4]] ; print(a, b)
a, *b = [x * 2 for x in [1, 2, 3, 4]] ; print(a, b)
a, *b, c = [x * 2 for x in [1, 2, 3, 4]]; print(a, b, c)
try:
a, *b, c = range(0)
except ValueError:
print("ValueError")
try:
a, *b, c = range(1)
except ValueError:
print("ValueError")
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