在for循环中打印时，如何反转列表结果？

Question

我正在尝试打印[0, 1, 2, 3, 4, 5, 5, 4, 3, 2, 1, 0]

我只知道如何打印[0, 1, 2, 3, 4, 5]

values = []

for numbers in range(0, 6):
    values.append(numbers)

print(values)

Answer 1

range函数的工作方式如下：

range(start, stop, step)

start是起始点，stop是终止点后的1，步长是如何在每次迭代中更新值。

values = []

for numbers in range(0, 6):
    values.append(numbers)

for numbers in range(5, -1, -1):
    values.append(numbers)

print(values)

Answer 2

l = [0, 1, 2, 3, 4, 5]

l = l + l[::-1]

print l
[0, 1, 2, 3, 4, 5, 5, 4, 3, 2, 1, 0]

Answer 3

尝试一下：

count = 6
left = []
right = []

for numbers in range(count):
    left.append(numbers)
    right.append(count-numbers-1)

left.extend(right)
print(left)