Python写入行流

Question

Part of my script is taking values and putting them to a text file delimited by tabs. So I have this:

for linesplit in fileList:
    for i in range (0, len(linesplit)):
        t.write (linesplit[i]+'\t')

I get as an output in the file what I expect in the first line but in the following lines they all start with a \\t in them, like is:

value1    value2    value3
    value1    value2    value3
    value1    value2    value3

Also, why don't I need to add a t.write('\\n') after the second FOR loop to create the newlines? I would expect the code above to produce one long line of tab separated values but it doesn't. If I include the t.write('\\n') then the tabs issue is resolved but I get double '\\n'...

Answer 1

it doesn't produce what you want because original lines ( linesplit ) contain end of line character ( \\n ) that you're not stripping. insert the following before your second for loop:

linesplit = linesplit.strip('\n')

That should do the job.

Answer 2

I'm sorry... After I hit submit it dawned on me. My last value already has a \\n in it which causes the newline.

Answer 3

您的最后一个值必须有一个导致两个问题的“ \\ n”：第一个问题是因为它在换行符后输出'\\ t'，第二个问题应该很明显-神秘的换行符来自您的最后一个值。

Answer 4

you linesplit variable could have newlines. just use strip() to remove it.

Answer 5

您的"value3"字符串实际上是"value3\\n" ，它解释了神奇的换行符以及除第一行以外的所有选项卡。

Answer 6

The inner loop isn't required. Perhaps you meant to use:

t.write('\t'.join(linesplit))