python写的将一些类型的文件压缩为7z格式

#将一些类型的文件压缩为7z.py
#for folder all file do 7z
import os
import sys
import distutils.file_util
def ImportOkFile():
    if(os.path.isfile("D:\\Records\\将一些类型的文件压缩为7z_record.txt")==False):
        f=open("D:\\Records\\将一些类型的文件压缩为7z_record.txt","w")
        f.close()
    f=open("D:\\Records\\将一些类型的文件压缩为7z_record.txt","r")
    okList=f.readlines()
    f.close()
    doneOkList=[]
    for okFile in okList:
        if(okFile[:3]=="ok "):
            doneOkList.append(okFile[0:-1])
    return doneOkList
def RecordOkFile(file,preinfo="ok "):
    f=open("D:\\Records\\将一些类型的文件压缩为7z_record.txt","a")
    f.write(preinfo+file+"\n")
    f.close()
def OneLayDir(doDir):
    folderfile=os.listdir(doDir)
    if len(folderfile)==1 and os.path.isdir(doDir+"\\"+folderfile[0]):
        firstfolder=curfolder=doDir+"\\"+folderfile[0]+"\\"
        folderfile=os.listdir(curfolder)
        while len(folderfile)==1 and os.path.isdir(curfolder+folderfile[0]):
            folderfile=os.listdir(curfolder)
            curfolder=curfolder+folderfile[0]+"\\"
        try:
            folderfile=os.listdir(curfolder)
        except exception as e:
            return Fa