如何使用python删除csv文件中逗号前后的间隔？

Question

Currently one row of my csv file looks like this :

314523, 165538, 76255, 335416, 416827 1250536:1 1744638:1 298526:1 1568238:1

I need it to look like this :

314523,165538,76255,335416,416827 1250536:1 1744638:1 298526:1 1568238:1

I only want to remove the spaces after or before commas and leave the other blank spaces as it is.

How can I do this in python?

Note : I am a beginner in python

Answer 1

I would recommend using the replace function. You enter the pattern you want to replace. In your example, the pattern is comma space (', ') and space comma (' ,') . Then say what you want to replace the pattern with (',') .

line=line.replace(', ', ',').replace(' ,',',')

Answer 2

You can use regex to do this, for a string:

import re
outputstring = re.sub(r'\s*,\s*', ',', inputstring)

This regex matches the whitespace surrounding a comma and the comma, and replaces it with just a comma. For a file, just do this for each line.