child.before taking almost 1 minute to execute

[pyfreek]

The following snippet alone is taking 1 minute to execute. is there any best way to find 'No such file' other than using child.before

                if not scrutinFile.startswith('/') :
                        scrutinFile = '/'+ scrutinFile
                scrutinFileFtp = directory + scrutinFile
                filePath, file = os.path.split(scrutinFileFtp)
                p.sendline('cd %s'%(filePath))
                p.expect([pexpect.EOF,pexpect.TIMEOUT])
                if 'No such file' in p.before:
                        print "No such directory exists!!"
                        sys.exit(1)


pyfreek