Frank Potter wrote: > I only want to remove the comments which begin with "//". > I did like this, but it doesn't work. > > r=re.compile(ur"//[^\r\n]+$", re.UNICODE|re.VERBOSE) > f=file.open("mycpp.cpp","r") > f=unicode(f,"utf8") > r.sub(ur"",f) > > Will somebody show me the right way? > Thanks~~ > > If you expect help with a problem, it would be nice if you told us what the problem is. What error did you get?
But even without that I see lots of errors: You must import re before you use it: import re Open a file with open((..) not file.open(...). Once you open the file you must *read* the contents and operate on that: data = f.read() Then you ought to close the file: f.close() Now you can do your sub on the string in data -- but note, THIS WON'T CHANGE data, but rather returns a new string which you must assign to something: new_data = r.sub(ur"", data) Then do something with the new string. Also I fear your regular expression is incorrect. Cheers, Gary Herron -- http://mail.python.org/mailman/listinfo/python-list