Re: extract from zip files..

[crashonyou]

hello, i am quite new to python and i have been experimenting with the zipfile module since i deal with a lot of zip files everyday and i want to automate my work..my question is: how do i retain the date and time stamp of the files that i have 'unzipped' from the zip file..i already know how to unzip but a new timestamp is written (time and day unzipped)..it is important that i retain the original from the zipfile..can someone help me out?thanks in advance.. :) been trying to solve this myself but the solution keeps on evading me..

def unzip(zip,dst,name):
    zip = zipfile.ZipFile(zip, 'r')    
    os.makedirs(dst+name)
    dst = dst+name
    for filename in zip.namelist():
        bytes = zip.read(filename)
        print 'Unzipping file:', filename, 'with', len(bytes), 'bytes..'
        file((join(dst,filename)), 'wb').write(zip.read(filename))
    zip.close
 

btw,am using windows xp with py2.4.4..

[ghostdog74]

hello, i am quite new to python and i have been experimenting with the zipfile module since i deal with a lot of zip files everyday and i want to automate my work..my question is: how do i retain the date and time stamp of the files that i have 'unzipped' from the zip file..i already know how to unzip but a new timestamp is written (time and day unzipped)..it is important that i retain the original from the zipfile..can someone help me out?thanks in advance.. :) been trying to solve this myself but the solution keeps on evading me..

def unzip(zip,dst,name):
    zip = zipfile.ZipFile(zip, 'r')    
    os.makedirs(dst+name)
    dst = dst+name
    for filename in zip.namelist():
        bytes = zip.read(filename)
        print 'Unzipping file:', filename, 'with', len(bytes), 'bytes..'
        file((join(dst,filename)), 'wb').write(zip.read(filename))
    zip.close
 

btw,am using windows xp with py2.4.4..

how about giving the tar module a try
here
tarring before zipping can keep time stamps..

[Motoma]

Welcome to theScripts.
I believe you can set these timestamps using the utime() function.

[crashonyou]

thanks guys..ill try tar as suggested..right now im using the zipfile module when i write the zip file and the time stamp is well preserved..am confused about the extract part though cos i want to retain the time stamp.. i have tried utime but im having a hard time binding the values to mtime which i got from getinfo..i guess ill do this a bit more till i get it but if i don't,ill be back..thanks a bunch again.. :)

correct me if im wrong, i can use any time value for atime when i use utime, right?

EDIT: by the way,its my 1st time in this forum and i am impressed..i hope to find
a home here..thanks Motoma :)

[bartonc]

thanks guys.. by the way,its my 1st time in this forum and i am impressed..i hope to find
a home here.. :)

Definitely! Keep posting,
Barton

[crashonyou]

woaah!!i finally got it..hehehe..thanks for the tips guys..i just used zipfile module without tarring..and i can unzip files with ([folders within folders]raised to the power of n)..hehehe..python is so amazing!!im shy about posting my code here just yet since im a newbie but if anyone wants it,id be happy to..thanks again.. :)

[bartonc]

woaah!!i finally got it..hehehe..thanks for the tips guys..i just used zipfile module without tarring..and i can unzip files with ([folders within folders]raised to the power of n)..hehehe..python is so amazing!!im shy about posting my code here just yet since im a newbie but if anyone wants it,id be happy to..thanks again.. :)

The whole community benefits from your posts. (just imagine the next person in the position that you were in before you posted) So, yes, definitly post for everybody's sake. Thanks.

[crashonyou]

here is my script..any comment is appreciated..i personally think its too long but it does what i need it to do..i can't retain folder time stamps though and i think its not possible since windows and winzip(the ones ive tried)also writes new timestamps to folders when unzipping from the zipfile..if u guys know how to do it, please let me know.. :) any 'constructive' comments and suggestions for this script will be appreciated..it will add to my programming skills..hehehe..thanks in advance guys..

ps..im trying something new right now..how do i zip all files and folders(recursive) inside a folder to a zip file..ill search around the forums
more but if anyone can help me out,you are heaven-sent..thanks!!

import zipfile, os, time, datetime, os.path
from zipfile import *
from os import *
from os.path import *
from time import mktime
 
## Zipfile to be unzipped
zips = 'test.zip'
## Destination directory
dst = ''
## Specific folder in destination
name = 'test'
 
zip = zipfile.ZipFile(zips, 'r')
if os.path.exists(dst+name):
    pass
else:
    os.makedirs(dst+name)
dst = dst+name+'/'
for filename in zip.namelist():
    if filename.endswith('/'):
        if os.path.exists(join(abspath(dst),filename)):
            pass
        else:
            os.makedirs(join(abspath(dst),filename))
    else:
        try:
            os.makedirs(normpath((abspath(dst)+'/'+dirname(filename))))
            try:                
                bytes = zip.read(filename)
                print 'Unzipping file:', filename, 'with', len(bytes), 'bytes..'
                file((join(dst,filename)), 'wb').write(zip.read(filename))
                accesstime = time.time()
                timeTuple=(int(zip.getinfo(filename).date_time[0]),\
                           int(zip.getinfo(filename).date_time[1]),\
                           int(zip.getinfo(filename).date_time[2]),\
                           int(zip.getinfo(filename).date_time[3]) ,\
                           int(zip.getinfo(filename).date_time[4]),\
                           int(zip.getinfo(filename).date_time[5]),\
                           int(0),int(0),int(0))
                modifiedtime = mktime(timeTuple)
                utime((join(dst,filename)), (accesstime,modifiedtime))
            except IOError:
                pass
        except:
            if os.path.exists(normpath((abspath(dst)+'/'+dirname(filename)))):
                try:                
                    bytes = zip.read(filename)
                    print 'Unzipping file:', filename, 'with', len(bytes), 'bytes..'
                    file((join(dst,filename)), 'wb').write(zip.read(filename))
                    accesstime = time.time()
                    timeTuple=(int(zip.getinfo(filename).date_time[0]),\
                               int(zip.getinfo(filename).date_time[1]),\
                               int(zip.getinfo(filename).date_time[2]),\
                               int(zip.getinfo(filename).date_time[3]) ,\
                               int(zip.getinfo(filename).date_time[4]),\
                               int(zip.getinfo(filename).date_time[5]),\
                               int(0),int(0),int(0))
                    modifiedtime = mktime(timeTuple)
                    utime((join(dst,filename)), (accesstime,modifiedtime))
                except IOError:
                    pass
            else:
                os.makedirs(normpath((abspath(dst)+'/'+dirname(filename))))
zip.close
 

[bvdet]

here is my script..any comment is appreciated..i personally think its too long but it does what i need it to do..i can't retain folder time stamps though and i think its not possible since windows and winzip(the ones ive tried)also writes new timestamps to folders when unzipping from the zipfile..if u guys know how to do it, please let me know.. :) any 'constructive' comments and suggestions for this script will be appreciated..it will add to my programming skills..hehehe..thanks in advance guys..

ps..im trying something new right now..how do i zip all files and folders(recursive) inside a folder to a zip file..ill search around the forums
more but if anyone can help me out,you are heaven-sent..thanks!!

This function will return a joined list as a string of all the files found under a given directory. In this case it passes files that do not have a 'py' extension:

import os
 
# Joined string method
 
def dir_list2(dir_name, *args):
    fileList = []
    for file in os.listdir(dir_name):
        dirfile = os.path.join(dir_name, file)
        if os.path.isfile(dirfile):
            if len(args) == 0:
                fileList.append('%s\n' %(dirfile))
            else:
                if os.path.splitext(dirfile)[1][1:] in args:
                    fileList.append('%s\n' %(dirfile))
        elif os.path.isdir(dirfile):
            print "Accessing directory:", dirfile
            fileList += dir_list2(dirfile, *args)
    return "".join(fileList)
 
if __name__ == '__main__':
 
    def run_script():
        dir_name = (os.path.join('C:\\', 'SDS2_7.0', 'macro'))
        f = dir_list2(dir_name, 'py')
        print f

One call to print is much faster than iterating on a file list to print each name.

[bvdet]

crashonyou,

Here is another means of compiling a list of file names using os.walk:

import os
 
dir_name = (os.path.join('X:/', 'dir1, 'dir2'))
 
a = os.walk(dir_name)
 
for root, dir, file in os.walk(dir_name):
 
    print "Root directory: %s" % (root)
 
    if len(dir) > 0:
        print "Subdirectories under %s:" % (root)
        dirList = map(lambda x: '%s\n' % (x), dir)
        dirStr = "".join(dirList)
        print dirStr
    else:
        print "There are no subdirectories under directory %s" % (root)
 
    if len(file) > 0:
        print "Files in directory %s:" % (root)
        fileList = map(lambda x: '%s\n' % (os.path.join(root, x)), file)
        fileStr = "".join(fileList)
        print fileStr
    else:
        print "There are no files in directory %s" % (root)

You can use a facimile of the above to create a list of file names to pass to:

import zipfile, os
 
def makeArchive(fileList, archive):
    try:
        # ZipFile will accept a file name or file object
        a = zipfile.ZipFile(archive, 'w', zipfile.ZIP_DEFLATED)
        for f in fileList:
            print "archiving file %s" % (f)
            a.write(f)    # Use (f, os.path.basename(f)) if not saving full path
        a.close()
        return True
    except: return False
 
if __name__== '__main__':
 
    arcfile_name = 'H:/TEMP/temsys/zipped_files.zip'
 
    if makeArchive(fileList, arcfile_name):    # fileList == your_file_list
        print arcfile_name, "was created.\n"
        # check the new archive file
        f = zipfile.ZipFile(arcfile_name, 'r')
        for info in f.infolist():
            print info.filename, info.date_time, info.file_size, info.compress_size
        f.close()
    else:
        print "There was an error"

HTH :),
BV

[crashonyou]

woah,thanks for that one..found it really useful..i'll be modifying it to suit my needs.. :)

[heiro]

woah,thanks for that one..found it really useful..i'll be modifying it to suit my needs.. :)

Sugs,

Buti nalang na post mo ito.Hindi na ako mahihirapang maghanap...heheheh