unpack1.py 1.37 KB
 Damien George committed Apr 08, 2014 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 ``````# unpack sequences a, = 1, ; print(a) a, b = 2, 3 ; print(a, b) a, b = range(2); print(a, b) # 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) 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")``````