如何降低此python编程的cpu使用率

Question

我有这个python脚本，但是它占用了100％的CPU，如何降低它， 是什么导致脚本占用100％的CPU，以及如何使diff更快。是因为difflib的问题，是否还有其他lib可以提供与此

相同的输出

import os
import re
import difflib
source = input('Enter Solaris File Dir: ')
source1 = input('Enter Linux File Dir: ')
reportname = input('Enter output reportname: ')
pattern = re.compile("^(.*?)\.(.*?)\.")
for root, dirs, filenames in os.walk(source):
    for solarisfile in filenames:
        #print solarisfile
        #find = re.compile("^(.*?)\.(.*?)\.")
        rptname1 = re.match(pattern,solarisfile).group(1)
        rptname2 = re.match(pattern,solarisfile).group(2)
        solarisdcfname = rptname1+rptname2
        #print solarisdcfname
        solarisfullpath = os.path.join(source, solarisfile)
        for root, dirs, filenames in os.walk(source1):
                for linuxfile in filenames:
                        #print " Ima here "
                        #print linuxfile
                        #find1 = re.compile("^(.*?)\.(.*?)\.")
                        lrptname1 = re.match(pattern,linuxfile).group(1)
                        lrptname2 = re.match(pattern,linuxfile).group(2)
                        ldcfname = lrptname1+lrptname2
                        linuxfullpath = os.path.join(source1, linuxfile)
                        if(solarisdcfname==ldcfname):
print "----Matched  file name ---------------"
                                print ldcfname
                                print solarisfile
                                print linuxfile
                                print("-----------------------------------")
                                print("Comparing files ", " > " + solarisfile, " < " +linuxfile)
                                print("-----------------------------------")
                                solaris_lines = open(solarisfullpath).readlines()
                                linux_lines = open(linuxfullpath).readlines()
                                difference = difflib.HtmlDiff().make_file(solaris_lines,linux_lines,ldcfname+'Solaris',ldcfname+'linux',True,0)
                                difference_report = open(reportname,'a+')
                                difference_report.write(difference)
                                difference_report.close()