python正则替换

python代码，进行文件的正则替换:

将“ task ” 替换为“ guoke.task ”

import reofile = open('init_s_tab.sql','r')wfile = open("init_s_tab2.sql",'w')wfile.truncate()regex = re.compile(r"\stask\s", re.IGNORECASE)for eachline in ofile:    aline = eachline;    aline = regex.sub(" guoke.task ",aline)    wfile.write(aline)wfile.close()ofile.close()