垂直拼接制表符分隔的txt文件

Question

input1、input2 和 output 是用制表符分隔的文本文件。

如果 input1 是

a b c
1 2 3

而 input2 是

e r t

那么我希望 output 是

a b c
1 2 3
e r t

我尝试过用 Python 来合并文件，参考了 Python 合并文本文件 的内容。

我尝试了

filenames = ['input1.txt', 'input2.txt']
with open('output.txt', 'w') as outfile:
    for fname in filenames:
        with open(fname) as infile:
            for line in infile:
                outfile.write(line)

然后又尝试了

filenames = ['input1.txt', 'input2.txt']
import fileinput
    with open('output.txt', 'w') as fout:
    for line in fileinput.input(filenames):
        fout.write(line)

但是这两个代码都是横向合并文件，而不是纵向合并。

这些代码生成了：

a b c
1 2 3e r t

Answer 1

你需要使用 \n 来换行。可以试试下面的代码示例，

filenames = ['input1.txt', 'input2.txt']
with open('output.txt', 'w') as outfile:
    for fname in filenames:
        with open(fname) as infile:
            for line in infile:
                outfile.write(line)
        outfile.write("\n")

Answer 2

你输入的文件有个问题，就是最后一行没有换行符。换句话说，最后一行后面没有空行。所以你需要手动加上这个换行符：

filenames = ['input1.txt', 'input2.txt']
with open('output.txt', 'w') as outfile:
    for fname in filenames:
        with open(fname) as infile:
            outfile.write(infile.read().rstrip() + '\n')