Python类型错误:“列表"对象不可调用 [英] Python Type Error: 'List' object is not callable

问题描述

我在Python27的这一小段代码内容中遇到了此错误.谁能帮我这个?预先感谢.

I'm getting this error with this small code content of Python27. Can anyone help me with this? Thanks in advance.

运行时错误回溯(最近一次通话最后一次):文件"5eb4481881d51d6ece1c375c80f5e509.py"，第57行，在打印len(arr)TypeError:列表"对象不可调用

Run Time Error Traceback (most recent call last): File "5eb4481881d51d6ece1c375c80f5e509.py", line 57, in print len(arr) TypeError: 'list' object is not callable

global maximum

def _lis(arr , n ):

    # to allow the access of global variable
    global maximum

    # Base Case
    if n == 1 :
        return 1

    # maxEndingHere is the length of LIS ending with arr[n-1]
    maxEndingHere = 1

    """Recursively get all LIS ending with arr[0], arr[1]..arr[n-2]
       IF arr[n-1] is maller than arr[n-1], and max ending with
       arr[n-1] needs to be updated, then update it"""
    for i in xrange(1, n):
        res = _lis(arr , i)
        if arr[i-1] < arr[n-1] and res+1 > maxEndingHere:
            maxEndingHere = res +1

    # Compare maxEndingHere with overall maximum. And
    # update the overall maximum if needed
    maximum = max(maximum , maxEndingHere)

    return maxEndingHere

def lis(arr):

    # to allow the access of global variable
    global maximum

    # lenght of arr
    n = len(arr)

    # maximum variable holds the result
    maximum = 1

    # The function _lis() stores its result in maximum
    _lis(arr , n)

    return maximum

num_t = input()

len = [None]*num_t

arr = []

for i in range(0,num_t):

    len[i] = input()

    arr.append(map(int, raw_input().split()))

    print len(arr)
    break    

推荐答案

您已经创建了一个名为 len 的列表，从这里可以看到以下事实:您可以对其进行索引:

You have created a list named len as you can see here from the fact that you're able to index it:

len[i] = input()

很自然地， len 不再是获取列表长度的函数，从而导致您收到错误消息.

So naturally, len is no longer a function that gets the length of a list, leading to the error you receive.

解决方案:为您的 len 列表命名.

Solution: name your len list something else.

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