a = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
for i in range(5):
b = a
for i in range(2):
b.append(b[0])
b.pop(0)
print("a: ", a)
print("b: ", b)
I have had an issue, in Python 3.6.4, where I would set a list to be the contents of another list. Then, I would append the first item of that list (item 0) to the end, then remove it from the beginning. After I have done this, the original list is overwritten! Try to figure out what the code above would output, then run it (or see the output below) I expect:
a: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
b: [2, 3, 4, 5, 6, 7, 8, 9, 0, 1]
a: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
b: [2, 3, 4, 5, 6, 7, 8, 9, 0, 1]
a: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
b: [2, 3, 4, 5, 6, 7, 8, 9, 0, 1]
a: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
b: [2, 3, 4, 5, 6, 7, 8, 9, 0, 1]
a: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
b: [2, 3, 4, 5, 6, 7, 8, 9, 0, 1]
The actual result:
a: [2, 3, 4, 5, 6, 7, 8, 9, 0, 1]
b: [2, 3, 4, 5, 6, 7, 8, 9, 0, 1]
a: [4, 5, 6, 7, 8, 9, 0, 1, 2, 3]
b: [4, 5, 6, 7, 8, 9, 0, 1, 2, 3]
a: [6, 7, 8, 9, 0, 1, 2, 3, 4, 5]
b: [6, 7, 8, 9, 0, 1, 2, 3, 4, 5]
a: [8, 9, 0, 1, 2, 3, 4, 5, 6, 7]
b: [8, 9, 0, 1, 2, 3, 4, 5, 6, 7]
a: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
b: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
