#!/usr/bin/python3.4
import os
import zipfile

def main():
    os.chdir("/home/cly/Backup")
    with zipfile.ZipFile("Backup.zip", "r") as myzip:
        myzip.extractall(path=None, members=None, pwd=None)
    tree = os.walk("/home/cly/Backup")
    path = sorted(tree.__next__()[2])[1:] <------------------------------HÄR
    for file in path:
        with zipfile.ZipFile(file, "r") as myzip:
            myzip.extractall(path=None, members=None, pwd=None)
            os.remove(file)

if __name__ == "__main__":
    main()