Extract files from zip file and retain mod date?

Question

I\'m trying to extract files from a zip file using Python 2.7.1 (on Windows, fyi) and each of my attempts shows extracted files with Modified Date = time of extraction (whic

Answer 1

Based on Ber's answer, I have developed this version (using Python 2.7.11), which also accounts for directory mod dates.

from os import path, utime
from sys import exit
from time import mktime
from zipfile import ZipFile

def unzip(zipfile, outDirectory):
    dirs = {}

    with ZipFile(zipfile, 'r') as z:
        for f in z.infolist():
            name, date_time = f.filename, f.date_time
            name = path.join(outDirectory, name)
            z.extract(f, outDirectory)

            # still need to adjust the dt o/w item will have the current dt
            date_time = mktime(f.date_time + (0, 0, -1))

            if (path.isdir(name)):
                # changes to dir dt will have no effect right now since files are
                # being created inside of it; hold the dt and apply it later
                dirs[name] = date_time
            else:
                utime(name, (date_time, date_time))

    # done creating files, now update dir dt
    for name in dirs:
       date_time = dirs[name]
       utime(name, (date_time, date_time))

if __name__ == "__main__":

    unzip('archive.zip', 'out')

    exit(0)

Since directories are being modified as the extracted files are being created inside them, there appears to be no point in setting their dates with os.utime until after the extraction has completed, so this version caches the directory names and their timestamps till the very end.