同时将链表转换为数值错误提升

Question

我有一个问题，我想将链接列表转换为单个数字 例如，

assert 120 == list_to_number([1,2,0])
assert -120 == list_to_number([-1,-2,0])
assert 0 == list_to_number([0])

这里我为此编写了一个代码，但它遇到了错误

def list_to_number(head):
    p = True
    num = ''
    while (head!=None):
        val = str(head)
        if (val.find('-') == 0):
             p = False
        num = num + val.replace('-','')
        head = head.next
    if (p == False):
         return -1*int(num)
    else:
         return int(num)

因此错误是

ValueError: invalid literal for int() with base 10

Answer 1

奇怪的小功能大声笑，但你到这里去了

def list_to_number(head):
    p = True
    final_number = ''
    for number in head:
        n = number if number > 0 else -number
        final_number = int(str(final_number) + str(n))

    return final_number if p else -final_number