python - 使用 RegEx (或其他方式)将 ",**"替换为换行符

Question

我正在开始使用 RegEx，我想知道是否有人可以帮助我编写一个语句来转换坐标，如下所示:

145.00694,-37.80421,9 145.00686,-37.80382,9 145.00595,-37.8035,16 145.00586,-37.80301,16

至

145.00694,-37.80421
145.00686,-37.80382
145.00595,-37.8035 
145.00586,-37.80301

(去掉最后一个逗号和值并将其变成换行符。)

我不知道如何使用通配符来做类似的事情。任何帮助将不胜感激!谢谢。

Answer 1

"Some people, when confronted with a problem, think 'I know, I'll use regular expressions.' Now they have two problems." --Jamie Zawinski

避免该问题并使用字符串方法:

s="145.00694,-37.80421,9 145.00686,-37.80382,9 145.00595,-37.8035,16 145.00586,37.80301,16"

lines = s.split(' ') # each line is separated by ' '
for line in lines:
    a,b,c=line.split(',') # three parts, separated by ','
    print a,b

正则表达式有其用途，但这不是其中之一。