IndexError：拆分行时列表索引超出范围

Question

我想从 python 中的现有代码中编写一个 function。 代码如下：

fileName = 'inputFile.txt'
f = open(fileName,'r')
output1 = "PassFile.txt"
output2 = "FailFile.txt"
passFile = open(output1,'w')
failFile = open(output2, 'w')
for line in f:
    line_split = line.split()
    if line_split[2] == "P":
        passFile.write(line)
    else:
        failFile.write(line)
passFile.close()
failFile.close()

function 我正在写：

def fileIO(inputFile='inputFile.txt'):

    with open(inputFile, 'r') as f:
        f = f.read()
        for line in f:
            line_splint = line.split(" ")
            if line_splint[2] == 'P':
                with open('PassFile.txt', 'w') as PassFile:
                    PassFile.write(line)
            elif line_splint[2] == 'F':
                with open('FailFile.txt', 'w') as FailFile:
                    FailFile.write(line)
            else:
                pass

fileIO()

输入文件如下所示：

Mary 25 P
John 32 P
Dylan 19 F
Julia 23 F
Chad 17 F
Jack 20 F

所以这里的目的是，我想从输入文件中生成两个文件，一个包含 P（通过）另一个包含 F（失败）的人。 但是，我面临错误：

Traceback (most recent call last):
  File "fileIO.py", line 33, in <module>
    fileIO()
  File "fileIO.py", line 24, in fileIO
    if line_splint[2] == 'P':
IndexError: list index out of range

Answer 1

您的问题来自以下线路：

f = f.read()

此 function 逐字符读取，但您希望逐行读取文件。 所以使用readlines() function 而不是read() function：

f = f.readlines()