問題描述

我編寫了一個完全兼容 Python 2 和 Python 3 的代碼片段.我編寫的片段解析數據并將輸出構建為 CSV 字符串列表.

I have written a fragment of code that is fully compatible with both Python 2 and Python 3. The fragment that I wrote parses data and it builds the output as a list of CSV strings.

腳本提供了一個選項來:

• 將數據寫入 CSV 文件，或
• 將其顯示到 stdout.

雖然在顯示到 stdout(第二個項目符號選項)時，我可以輕松地遍歷列表并將 , 替換為 ，但這些項目長度是任意的，因此由于制表符的差異，請不要以很好的格式排列.

While I could easily iterate through the list and replace , with when displaying to stdout (second bullet option), the items are of arbitrary length, so don't line up in a nice format due to variances in tabs.

我做了很多研究，我相信字符串格式選項可以完成我所追求的.也就是說，我似乎找不到可以幫助我正確使用語法的示例.

I have done quite a bit of research, and I believe that string format options could accomplish what I'm after. That said, I can't seem to find an example that helps me get the syntax correct.

我寧愿不使用外部庫.我知道如果我走這條路有很多可用的選項，但我希望腳本盡可能兼容和簡單.

I would prefer to not use an external library. I am aware that there are many options available if I went that route, but I want the script to be as compatible and simple as possible.

這是一個例子:

value1,somevalue2,value3,reallylongvalue4,value5,superlongvalue6
value1,value2,reallylongvalue3,value4,value5,somevalue6

你能幫幫我嗎?任何建議將不勝感激.

Can you help me please? Any suggestion will be much appreciated.

推薦答案

import csv
from StringIO import StringIO

rows = list(csv.reader(StringIO(
    '''value1,somevalue2,value3,reallylongvalue4,value5,superlongvalue6
value1,value2,reallylongvalue3,value4,value5,somevalue6''')))

widths = [max(len(row[i]) for row in rows) for i in range(len(rows[0]))]

for row in rows:
    print(' | '.join(cell.ljust(width) for cell, width in zip(row, widths)))

輸出:

value1 | somevalue2 | value3           | reallylongvalue4 | value5 | superlongvalue6
value1 | value2     | reallylongvalue3 | value4           | value5 | somevalue6     

這篇關于Python - 在對齊的列中打印 CSV 字符串列表的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！