TypeError:'_io.TextIOWrapper'对象不可订阅

Question

像标题所说的那样得到错误.这是追溯.我知道lst [x]导致了这个问题,但不太确定如何解决这个问题.我已经搜索了谷歌+ stackoverflow但没有得到我正在寻找的解决方案.

Traceback (most recent call last):
File "C:/Users/honte_000/PycharmProjects/Comp Sci/2015/2015/storelocation.py", line 30, in <module>
main()
File "C:/Users/honte_000/PycharmProjects/Comp Sci/2015/2015/storelocation.py", line 28, in main
print(medianStrat(lst))
File "C:/Users/honte_000/PycharmProjects/Comp Sci/2015/2015/storelocation.py", line 24, in medianStrat
return lst[x]
TypeError: '_io.TextIOWrapper' object is not subscriptable

这是实际的代码

def medianStrat(lst):
    count = 0
    test = []
    for line in lst:
        test += line.split()
        for i in lst:
            count = count +1
            if count % 2 == 0:
                x = count//2
                y = lst[x]
                z = lst[x-1]
                median = (y + z)/2
                return median
            if count %2 == 1:
                x = (count-1)//2
                return lst[x]     # Where the problem persists

def main():
    lst = open(input("Input file name: "), "r")
    print(medianStrat(lst))

那么问题的解决方案是什么,或者可以做些什么来使代码工作呢？(代码应该执行的主要功能是打开文件并获取中位数)

Answer 1

你不能索引(__getitem__)一个 _io.TextIOWrapper对象.你能做的就是使用一条list线.在您的代码中尝试此操作:

lst = open(input("Input file name: "), "r").readlines()

此外,您没有关闭file对象,这会更好:

with open(input("Input file name: ", "r") as lst:
    print(medianStrat(lst.readlines()))

with确保文件关闭,请参阅文档