`ZipFile.extractall()` does not preserve file attributes. See http://stackoverflow.com/a/9813471

extract_zipfile.py

import os
import time
import zipfile


def extract_zipfile(filename, dest_dir):
    """Extract all files in a ZIP file while preserving date and time.
    
    See http://stackoverflow.com/a/9813471.
    """
    with zipfile.ZipFile(filename) as zh:
        for f in zh.infolist():
            if f.filename.endswith(os.path.sep):
                dir_ = os.path.join(dest_dir, f.filename)
                if not os.path.isdir(dir_):
                    os.mkdir(dir_, 0755)
                continue

            file_ = os.path.join(dest_dir, f.filename)
            with open(file_, 'wb') as fh:
                fh.write(zh.open(f).read())

            date_time = time.mktime(f.date_time + (0, 0, -1))
            os.utime(file_, (date_time, date_time))