pythonsentence

replace string of symbol+ rational number python

I have a large corpus which contains sentences such as

text = ["$3.4 million but not section 4.1"]

that I want to clean as

text = ["$3,4 million but not section 4.1"]

using a simple line such as

text.replace("$\d.\d","$\d,\d") or with re.sub. but I don't know how to map the string "$"+digit+"." to "$"+digit+","

Any idea? thanks

Solution 
  • def rep(m):
    return m.group(1) + "," + m.group(2)
re.sub("([$][0-9]+).([0-9]+)",rep,text)