从文件Python 3中倒转行

Question

我正在尝试将Python 3中的文本文件中的行反转并写入到外部文件中。目前，我对不包含行尾\n的幼稚的最后一行有问题。我从这段代码中得到了一个TypeError。

def main():

    endofprogram = False
    try:
        inputfile = input("Enter name of input file: ")

        ifile = open(inputfile, "r", encoding="utf-8")

        outputfile = input("Enter name of output file: ")
        while os.path.isfile(outputfile):
            if True:
                outputfile = input("File Exists. Enter name again: ")        
        ofile = open(outputfile, "w")        


    except IOError:
        print("Error opening file - End of program")
        endofprogram = True

    #If there is not exception, start reading the input file

    if endofprogram == False:
        newline = "\n"
        for line in ifile:
            line = line.strip            
            line = line + "\n"            
            lines = ifile.readlines()

    lines.reverse()
    newlines= "".join(lines)
    print(newlines)     
    ifile.close()
    ofile.close()

main() # Call the main to execute the solution

Answer 1

最后我这么做是为了让它运转..。

if endofprogram == False:         

    lines = ifile.readlines()
    linelist = []
    for line in lines:
        line = line.strip("\n")
        line = line + "\n"

        linelist.append(line)


    linelist.reverse()

    newlines= "".join(linelist)
    ofile.write(newlines)  

Answer 2

使用您的规范来完成这一任务的最简单的方法--假设我正确理解，并且您想要做的就是颠倒每一行的顺序--就是利用reverse方法来处理python中的列表。因此，对于任何给定的行：

#define line here
line_list = list(line)
line_list.reverse()
reversed_line = ''.join(line_list)

编辑:根据换行符的问题，这里有一个修改：

#define line here
line_list = list(line.replace('\n', ''))
line_list.reverse()
reversed_line = ''.join(line_list) + '\n'