Replace strings in files by Python

Question

How can you replace the match with the given replacement recursively in a given directory and its subdirectories?

Pseudo-code

impo         


        

Answer 1

this should work:

import re, os
import fnmatch
for path, dirs, files in os.walk(os.path.abspath(directory)):
       for filename in fnmatch.filter(files, filePattern):
           filepath = os.path.join(path, filename)
           with open("namelist.wps", 'a') as out:
               with open("namelist.wps", 'r') as readf:
                   for line in readf:
                       line = re.sub(r"dbname=noa user=noa", "dbname=masi user=masi", line)
                       out.write(line)