Extracting review comments with Python

Often I need to exchange code over email with temmates who cannot access our source control repository due to network issues. In many cases, especially after a code review, I find that they have removed the review comments that I put in and I have no way to figure where I commented on what. This is also partly due to the not-so-good practice where I put the comments in the code using '//@@' as an indicator. To get over such cases, I wrote a simple Python script that reads all my Java source files and extracts these lines with '//@@' and puts them in a text file. This text file then serves as a rough guideline for me to review the code again.

Here is the script, hope it proves useful to someone else.

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import re
import os

class Parser:
 def __init__(self,pattern,outfilename):
  self.pattern=re.compile(pattern)
  self.outfile=open(outfilename,'a')

 def walkDir(self,base_dir):
  for t in os.walk(base_dir):
   for f in t[2]:
    self.processFile("/".join((t[0], f)))
  self.outfile.close()

 def processFile(self,filename):
  self.outfile.write('Processiing file :'+filename+'\n')
  self.outfile.write('=============================\n')
  file=open(filename,'r')
  for line in file:
   if(self.pattern.match(line) is not None):
    self.outfile.write(line+'\n')


if __name__=="__main__":
 p = Parser('^.*//@@.*','testresult.txt')
 p.walkDir('./code_with_review_comments')

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Let me know how useful you find it!