i want to upload zip folder from file input in form the i want to extract the contents of this uploaded zip folder,and store the contents (files)of this zip in the blobstore in order to download them after putting these files in one folder,but the problem is that i can't deal with the zip folder directly(to read it), i tried as this:

form = cgi.FieldStorage() 
file_upload = form['file']
zip1=file_upload.filename
zipstream=StringIO.StringIO(zip1.read())

But the problem still that i can't read the zip as previous,also i tried to read zip folder directly like this:

z1=zipfile.ZipFile(zip1,"r")

But there was an error in this way.Please can any one help me.Thanks in advance.