The string is the following:
s = 'AUDC,AUDIOCODES COM,+55,27.49,26.47,"$1,455.85",($56.10),($56.10),-3.71%'
I would like the comma inside this substring "$1,455.85" to be removed but not the other commas.
I tried this but failed:
import re
pattern = r'$\d(,)'
re.sub(pattern, '', s)
Why doesn't this work?
You need a positive lookbehind assertion, i.e., match a comma if it is preceded by a $ (note that $ needs to be escaped as \$) followed by a digit (\d). Try:
>>> s = 'AUDC,AUDIOCODES COM,+55,27.49,26.47,"$1,455.85",($56.10),($56.10),-3.71%'
>>> pattern = r'(?<=\$\d),'
>>> re.sub(pattern, '', s)
'AUDC,AUDIOCODES COM,+55,27.49,26.47,"$1455.85",($56.10),($56.10),-3.71%'