写一个额外的列WITH头 [英] Writing an extra column WITH header

问题描述

目前我有这个：

2个变量：
varHeader：ExtraColumn
varContent：ToBeFilledIn

  writer.writeheader（）
在阅读器中：
 writer.writerow（line）
  

这一切都很好。问题是，我有2个变量，varHeader和varContent。我在writer.writeheader之前失败了：

1. 我需要添加一个额外的列作为标题ExtraColumn，




每个'行'需要将varContent的值添加到新创建的列 $ b

虽然这看起来很简单，但是它让我想起来，我不能做到。猜猜这是一个典型的周五病; - ）





感谢伙伴，





>


解决方案

这是你想要的吗？

  from csv import DictReader，DictWriter 
 
 with open ...：
 reader = DictReader（in_f）
 writer = DictWriter（out_f，['ExtraColumn'] + reader。 fieldnames）
 writer.writeheader（）
在阅读器中的行：
 line ['ExtraColumn'] = varContent 
 writer.writerow（line）
  




at the moment I have this:

2 variables: varHeader: ExtraColumn varContent: ToBeFilledIn

        writer.writeheader()
        for line in reader:
            writer.writerow(line)

And that all works fine. Problem is that I have 2 variables, varHeader and varContent. And what am I failing at:

1. before writer.writeheader, I need to add an extra column with as title ExtraColumn, which is the content of the varHeader variable.
2. each 'line' needs to add the value of varContent to the newly created column

Although this seemed simple to me, it is blowing my mind, I can't get it done. Guess it's a typical friday disease ;-)

Thanks mates,

regard from a newbie.

解决方案

Is this what you want?

from csv import DictReader, DictWriter

with open ...:
    reader = DictReader(in_f)
    writer = DictWriter(out_f, ['ExtraColumn'] + reader.fieldnames)
    writer.writeheader()
    for line in reader:
        line['ExtraColumn'] = varContent
        writer.writerow(line)

这篇关于写一个额外的列WITH头的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！