003.备份文件夹zip

#python3 backupToZip()
#copies an entire folder and its contents into a zip file whose filename increments
import zipfile, os,datetime
path = 'E:\\04.AutomationProject\\PracticePython\\noteBasic'
os.chdir(path)
def backupToZip(folder):
    #backup the entire contents of foler into zip file
    folder = os.path.abspath(folder)
    #figure out the filename this code should be based on
    #whatif fiels already exitst
    nowTime = datetime.datetime.now().strftime("%Y%m%d%H%M")
    while True:
        zipFilename = os.path.basename(folder) + "_" + str(nowTime) + ".zip"
        if not os.path.exists(zipFilename):
            break
        nowTime = datetime.datetime.now().strftime("%Y%m%d%H%M")
        #todo:create the zip file
    print("creating %s..." %(zipFilename))
    backupZip = zipfile.ZipFile(zipFilename,'w')
        #todo:walk the entire folder tree and compress the files in each folder
    for folderName,subFolders,fileNames in os.walk(folder):
        print('adding files in %s...'%(folderName))
        #add the current folder to the ZIP file
        for fileName in fileNames:
            newBase = os.path.basename(folder) + '_'
            if fileName.startswith(newBase) and fileName.endswith(".zip"):
               continue #don't backup the backupzip files
            backupZip.write(os.path.join(folderName,fileName))
    backupZip.close()
    print('Done')
backupToZip(path)