Python os.utime() Examples

def run(self):
        has_npm = self.has_npm()
        if not has_npm:
            log.error("`npm` unavailable.  If you're running this command using sudo, make sure `npm` is available to sudo")

        env = os.environ.copy()
        env['PATH'] = npm_path

        if self.should_run_npm_install():
            log.info("Installing build dependencies with npm.  This may take a while...")
            check_call(['npm', 'install'], cwd=node_root, stdout=sys.stdout, stderr=sys.stderr)
            os.utime(self.node_modules, None)

        for t in self.targets:
            if not exists(t):
                msg = 'Missing file: %s' % t
                if not has_npm:
                    msg += '\nnpm is required to build a development version of a widget extension'
                raise ValueError(msg)

        # update package data in case this created new files
        update_package_data(self.distribution) 

def main(reactor, *args):
    client = http.HTTPClient()
    fname = os.path.join(tmp, str(uuid.uuid4()))
    yield httpRequest(client._agent, URI, method='GET', saveto=fname)
    filesize = os.path.getsize(fname)
    assert filesize > 1
    # touch file to 5 minutes in the past
    past = int(os.path.getmtime(fname)) - 300
    print "PAST MTIME", past
    os.utime(fname, (past, past))
    assert os.path.getmtime(fname) == past
    yield httpRequest(client._agent, URI, method='GET', saveto=fname)
    # it was not modified
    current = os.path.getmtime(fname)
    print "CURRENT MTIME", current
    assert int(current) == past
    print 'OK'
    shutil.rmtree(tmp) 

def test_copy2_with_dir_as_target(smb_share):
    src_filename = "%s\\source.txt" % smb_share
    dst_filename = "%s\\directory" % smb_share
    mkdir(dst_filename)

    with open_file(src_filename, mode='w') as fd:
        fd.write(u"content")
    utime(src_filename, times=(1024, 1024))

    actual = copy2(src_filename, dst_filename)
    assert actual == ntpath.join(dst_filename, "source.txt")

    with open_file("%s\\source.txt" % dst_filename) as fd:
        assert fd.read() == u"content"

    src_stat = smbclient_stat(src_filename)

    actual = smbclient_stat("%s\\source.txt" % dst_filename)
    assert actual.st_atime == 1024
    assert actual.st_mtime == 1024
    assert actual.st_ctime != src_stat.st_ctime
    assert actual.st_chgtime != src_stat.st_chgtime
    assert actual.st_file_attributes & FileAttributes.FILE_ATTRIBUTE_READONLY == 0 

def test_copystat_local_to_local(tmpdir):
    test_dir = tmpdir.mkdir("test")
    src_filename = "%s\\source.txt" % test_dir
    dst_filename = "%s\\target.txt" % test_dir

    with open(src_filename, mode='w') as fd:
        fd.write(u"content")
    os.chmod(src_filename, stat.S_IREAD)
    os.utime(src_filename, (1024, 1024))

    with open(dst_filename, mode='w') as fd:
        fd.write(u"content")

    copystat(src_filename, dst_filename)

    actual = os.stat(dst_filename)
    assert actual.st_atime == 1024
    assert actual.st_mtime == 1024
    assert stat.S_IMODE(actual.st_mode) & stat.S_IWRITE == 0 

def test_copystat_remote_to_local(smb_share, tmpdir):
    test_dir = tmpdir.mkdir("test")
    src_filename = "%s\\source.txt" % smb_share
    dst_filename = "%s\\target.txt" % test_dir

    with open_file(src_filename, mode='w', file_attributes=FileAttributes.FILE_ATTRIBUTE_READONLY) as fd:
        fd.write(u"content")
    utime(src_filename, times=(1024, 1024))

    with open(dst_filename, mode='w') as fd:
        fd.write(u"content")

    copystat(src_filename, dst_filename)

    actual = os.stat(dst_filename)
    assert actual.st_atime == 1024
    assert actual.st_mtime == 1024
    assert stat.S_IMODE(actual.st_mode) & stat.S_IWRITE == 0 

def decode(estimator, hparams, decode_hp):
  """Decode from estimator. Interactive, from file, or from dataset."""
  if FLAGS.decode_interactive:
    if estimator.config.use_tpu:
      raise ValueError("TPU can only decode from dataset.")
    decoding.decode_interactively(estimator, hparams, decode_hp,
                                  checkpoint_path=FLAGS.checkpoint_path)
  elif FLAGS.decode_from_file:
    if estimator.config.use_tpu:
      raise ValueError("TPU can only decode from dataset.")
    decoding.decode_from_file(estimator, FLAGS.decode_from_file, hparams,
                              decode_hp, FLAGS.decode_to_file,
                              checkpoint_path=FLAGS.checkpoint_path)
    if FLAGS.checkpoint_path and FLAGS.keep_timestamp:
      ckpt_time = os.path.getmtime(FLAGS.checkpoint_path + ".index")
      os.utime(FLAGS.decode_to_file, (ckpt_time, ckpt_time))
  else:
    decoding.decode_from_dataset(
        estimator,
        FLAGS.problem,
        hparams,
        decode_hp,
        decode_to_file=FLAGS.decode_to_file,
        dataset_split="test" if FLAGS.eval_use_test_set else None) 

def test_copy2(smb_share):
    src_filename = "%s\\source.txt" % smb_share
    dst_filename = "%s\\target.txt" % smb_share

    with open_file(src_filename, mode='w', file_attributes=FileAttributes.FILE_ATTRIBUTE_READONLY) as fd:
        fd.write(u"content")
    utime(src_filename, times=(1024, 1024))

    actual = copy2(src_filename, dst_filename)
    assert actual == dst_filename

    with open_file(dst_filename) as fd:
        assert fd.read() == u"content"

    src_stat = smbclient_stat(src_filename)

    actual = smbclient_stat(dst_filename)
    assert actual.st_atime == 1024
    assert actual.st_mtime == 1024
    assert actual.st_ctime != src_stat.st_ctime
    assert actual.st_chgtime != src_stat.st_chgtime
    assert actual.st_file_attributes & FileAttributes.FILE_ATTRIBUTE_READONLY == FileAttributes.FILE_ATTRIBUTE_READONLY 

def test_copystat_of_file(smb_share):
    src_filename = "%s\\source.txt" % smb_share
    dst_filename = "%s\\target.txt" % smb_share

    with open_file(src_filename, mode='w', file_attributes=FileAttributes.FILE_ATTRIBUTE_READONLY) as fd:
        fd.write(u"content")
    utime(src_filename, (1024, 1024))

    with open_file(dst_filename, mode='w') as fd:
        fd.write(u"content")

    copystat(src_filename, dst_filename)

    actual = smbclient_stat(dst_filename)
    assert actual.st_atime == 1024
    assert actual.st_mtime == 1024
    assert actual.st_file_attributes & FileAttributes.FILE_ATTRIBUTE_READONLY == FileAttributes.FILE_ATTRIBUTE_READONLY 

def test_copystat_of_dir(smb_share):
    src_dirname = "%s\\source" % smb_share
    dst_dirname = "%s\\target" % smb_share

    with open_file(src_dirname, mode='xb', file_type='dir', file_attributes=FileAttributes.FILE_ATTRIBUTE_READONLY,
                   buffering=0):
        pass
    utime(src_dirname, (-1024, -1024))  # Test out dates earlier than EPOCH.

    mkdir(dst_dirname)

    copystat(src_dirname, dst_dirname)

    actual = smbclient_stat(dst_dirname)
    assert actual.st_atime == -1024
    assert actual.st_mtime == -1024
    assert actual.st_file_attributes & FileAttributes.FILE_ATTRIBUTE_READONLY == FileAttributes.FILE_ATTRIBUTE_READONLY 

def CacheRetrieveFunc(target, source, env):
    t = target[0]
    fs = t.fs
    cd = env.get_CacheDir()
    cachedir, cachefile = cd.cachepath(t)
    if not fs.exists(cachefile):
        cd.CacheDebug('CacheRetrieve(%s):  %s not in cache\n', t, cachefile)
        return 1
    cd.CacheDebug('CacheRetrieve(%s):  retrieving from %s\n', t, cachefile)
    if SCons.Action.execute_actions:
        if fs.islink(cachefile):
            fs.symlink(fs.readlink(cachefile), t.get_internal_path())
        else:
            env.copy_from_cache(cachefile, t.get_internal_path())
            try:
                os.utime(cachefile, None)
            except OSError:
                pass
        st = fs.stat(cachefile)
        fs.chmod(t.get_internal_path(), stat.S_IMODE(st[stat.ST_MODE]) | stat.S_IWRITE)
    return 0 

def __setitem__(self, key, message):
        """Replace the keyed message; raise KeyError if it doesn't exist."""
        old_subpath = self._lookup(key)
        temp_key = self.add(message)
        temp_subpath = self._lookup(temp_key)
        if isinstance(message, MaildirMessage):
            # temp's subdir and suffix were specified by message.
            dominant_subpath = temp_subpath
        else:
            # temp's subdir and suffix were defaults from add().
            dominant_subpath = old_subpath
        subdir = os.path.dirname(dominant_subpath)
        if self.colon in dominant_subpath:
            suffix = self.colon + dominant_subpath.split(self.colon)[-1]
        else:
            suffix = ''
        self.discard(key)
        new_path = os.path.join(self._path, subdir, key + suffix)
        os.rename(os.path.join(self._path, temp_subpath), new_path)
        if isinstance(message, MaildirMessage):
            os.utime(new_path, (os.path.getatime(new_path),
                                message.get_date())) 

def download_pic(self, filename: str, url: str, mtime: datetime,
                     filename_suffix: Optional[str] = None, _attempt: int = 1) -> bool:
        """Downloads and saves picture with given url under given directory with given timestamp.
        Returns true, if file was actually downloaded, i.e. updated."""
        urlmatch = re.search('\\.[a-z0-9]*\\?', url)
        file_extension = url[-3:] if urlmatch is None else urlmatch.group(0)[1:-1]
        if filename_suffix is not None:
            filename += '_' + filename_suffix
        filename += '.' + file_extension
        # A post is considered "commited" if the json file exists and is not malformed.
        if self.commit_mode:
            if self._committed and os.path.isfile(filename):
                self.context.log(filename + ' exists', end=' ', flush=True)
                return False
        else:
            if os.path.isfile(filename):
                self.context.log(filename + ' exists', end=' ', flush=True)
                return False
        self.context.get_and_write_raw(url, filename)
        os.utime(filename, (datetime.now().timestamp(), mtime.timestamp()))
        return True 

def copystat(src, dst):
    """Copy file metadata

    Copy the permission bits, last access time, last modification time, and
    flags from `src` to `dst`. On Linux, copystat() also copies the "extended
    attributes" where possible. The file contents, owner, and group are
    unaffected. `src` and `dst` are path names given as strings.
    """
    st = os.stat(src)
    mode = stat.S_IMODE(st.st_mode)
    if hasattr(os, 'utime'):
        os.utime(dst, (st.st_atime, st.st_mtime))
    if hasattr(os, 'chmod'):
        os.chmod(dst, mode)
    if hasattr(os, 'chflags') and hasattr(st, 'st_flags'):
        try:
            os.chflags(dst, st.st_flags)
        except OSError, why:
            for err in 'EOPNOTSUPP', 'ENOTSUP':
                if hasattr(errno, err) and why.errno == getattr(errno, err):
                    break
            else:
                raise 

def write(self, preserve_timestamps=False):
        """Write the metadata back to the image.

        Args:
        preserve_timestamps -- whether to preserve the file's original
                               timestamps (access time and modification time)
                               Type: boolean
        """
        self._image._writeMetadata()
        if self.filename is None:
            return

        if preserve_timestamps:
            # Revert to the original timestamps
            os.utime(self.filename, (self._atime, self._mtime))

        else:
            # Reset the reference timestamps
            stat = os.stat(self.filename)
            self._atime = stat.st_atime
            self._mtime = stat.st_mtime 

def check_for_update():
  if os.path.exists(FILE_UPDATE):
    mtime = os.path.getmtime(FILE_UPDATE)
    last = datetime.utcfromtimestamp(mtime).strftime('%Y-%m-%d')
    today = datetime.utcnow().strftime('%Y-%m-%d')
    if last == today:
      return
  try:
    with open(FILE_UPDATE, 'a'):
      os.utime(FILE_UPDATE, None)
    request = urllib2.Request(
      CORE_VERSION_URL,
      urllib.urlencode({'version': __version__}),
    )
    response = urllib2.urlopen(request)
    with open(FILE_UPDATE, 'w') as update_json:
      update_json.write(response.read())
  except (urllib2.HTTPError, urllib2.URLError):
    pass 

def textbundle_to_bear(md_text, md_file, mod_dt):
    md_text = restore_tags(md_text)
    bundle = os.path.split(md_file)[0]
    match = re.search(r'\{BearID:(.+?)\}', md_text)
    if match:
        uuid = match.group(1)
        # Remove old BearID: from new note
        md_text = re.sub(r'\<\!-- ?\{BearID\:' + uuid + r'\} ?--\>', '', md_text).rstrip() + '\n'
        md_text = insert_link_top_note(md_text, 'Images added! Link to original note: ', uuid)
    else:
        # New textbundle (with images), add path as tag: 
        md_text = get_tag_from_path(md_text, bundle, export_path)
    write_file(md_file, md_text, mod_dt)
    os.utime(bundle, (-1, mod_dt))
    subprocess.call(['open', '-a', '/applications/bear.app', bundle])
    time.sleep(0.5) 

def _update_timestamp(path: os.PathLike, set_new: bool) -> None:
    """
    Context manager to set the timestamp of the path to plus or
    minus a fixed delta, regardless of modifications within the context.

    if set_new is True, the delta is added. Otherwise, the delta is subtracted.
    """
    stats = os.stat(path)
    if set_new:
        new_timestamp = (stats.st_atime_ns + _TIMESTAMP_DELTA, stats.st_mtime_ns + _TIMESTAMP_DELTA)
    else:
        new_timestamp = (stats.st_atime_ns - _TIMESTAMP_DELTA, stats.st_mtime_ns - _TIMESTAMP_DELTA)
    try:
        yield
    finally:
        os.utime(path, ns=new_timestamp)


# Public Methods 

def oscrc_create(self, oscrc_file, apiurl, cookiejar_file, user):
        sentry_dsn = sentry_client().dsn
        sentry_environment = sentry_client().options.get('environment')

        oscrc_file.write('\n'.join([
            '[general]',
            # Passthru sentry_sdk options to allow for reporting on subcommands.
            'sentry_sdk.dsn = {}'.format(sentry_dsn) if sentry_dsn else '',
            'sentry_sdk.environment = {}'.format(sentry_environment) if sentry_environment else '',
            'apiurl = {}'.format(apiurl),
            'cookiejar = {}'.format(cookiejar_file.name),
            'staging.color = 0',
            '[{}]'.format(apiurl),
            'user = {}'.format(user),
            'pass = invalid',
            '',
        ]).encode('utf-8'))
        oscrc_file.flush()

        # In order to avoid osc clearing the cookie file the modified time of
        # the oscrc file must be set further into the past.
        # if int(round(config_mtime)) > int(os.stat(cookie_file).st_mtime):
        recent_past = time.time() - 3600
        os.utime(oscrc_file.name, (recent_past, recent_past)) 

def touch(self, mode=0o666, exist_ok=True):
        """
        Create this file with the given access mode, if it doesn't exist.
        """
        if self._closed:
            self._raise_closed()
        if exist_ok:
            # First try to bump modification time
            # Implementation note: GNU touch uses the UTIME_NOW option of
            # the utimensat() / futimens() functions.
            try:
                self._accessor.utime(self, None)
            except OSError:
                # Avoid exception chaining
                pass
            else:
                return
        flags = os.O_CREAT | os.O_WRONLY
        if not exist_ok:
            flags |= os.O_EXCL
        fd = self._raw_open(flags, mode)
        os.close(fd) 

def touch(self, mode=0o666, exist_ok=True):
        """
        Create this file with the given access mode, if it doesn't exist.
        """
        if self._closed:
            self._raise_closed()
        if exist_ok:
            # First try to bump modification time
            # Implementation note: GNU touch uses the UTIME_NOW option of
            # the utimensat() / futimens() functions.
            try:
                self._accessor.utime(self, None)
            except OSError:
                # Avoid exception chaining
                pass
            else:
                return
        flags = os.O_CREAT | os.O_WRONLY
        if not exist_ok:
            flags |= os.O_EXCL
        fd = self._raw_open(flags, mode)
        os.close(fd) 

def update_atime(self):
        """Update the atime of the socket file all few hours.

        From the XDG basedir spec:

        To ensure that your files are not removed, they should have their
        access time timestamp modified at least once every 6 hours of monotonic
        time or the 'sticky' bit should be set on the file.
        """
        path = self._server.fullServerName()
        if not path:
            log.ipc.error("In update_atime with no server path!")
            return

        log.ipc.debug("Touching {}".format(path))

        try:
            os.utime(path)
        except OSError:
            log.ipc.exception("Failed to update IPC socket, trying to "
                              "re-listen...")
            self._server.close()
            self.listen() 

def utime(self, *args, **kwargs):
        os.utime(self.file, *args, **kwargs) 

def write_file(filename, file_content, modified):
    with open(filename, "w", encoding='utf-8') as f:
        f.write(file_content)
    if modified > 0:
        os.utime(filename, (-1, modified)) 

def make_text_bundle(md_text, filepath, mod_dt):
    '''
    Exports as Textbundles with images included 
    '''
    bundle_path = filepath + '.textbundle'
    assets_path = os.path.join(bundle_path, 'assets')    
    if not os.path.exists(bundle_path):
        os.makedirs(bundle_path)
        os.makedirs(assets_path)
        
    info = '''{
    "transient" : true,
    "type" : "net.daringfireball.markdown",
    "creatorIdentifier" : "net.shinyfrog.bear",
    "version" : 2
    }'''
    matches = re.findall(r'\[image:(.+?)\]', md_text)
    for match in matches:
        image_name = match
        new_name = image_name.replace('/', '_')
        source = os.path.join(bear_image_path, image_name)
        target = os.path.join(assets_path, new_name)
        shutil.copy2(source, target)

    md_text = re.sub(r'\[image:(.+?)/(.+?)\]', r'![](assets/\1_\2)', md_text)
    write_file(bundle_path + '/text.md', md_text, mod_dt)
    write_file(bundle_path + '/info.json', info, mod_dt)
    os.utime(bundle_path, (-1, mod_dt)) 

def touch(self, path, **kwargs):
        path = self._strip_protocol(path)
        if self.auto_mkdir:
            self.makedirs(self._parent(path), exist_ok=True)
        if self.exists(path):
            os.utime(path, None)
        else:
            open(path, "a").close() 

def win_api_copyfile(src,dst):
            CopyFile(src,dst)
            os.utime(dst) 

def change_filemtime(path, time):
    os.utime(path, (time, time)) 

def utime(self, tarinfo, targetpath):
        """Set modification time of targetpath according to tarinfo.
        """
        if not hasattr(os, 'utime'):
            return
        try:
            os.utime(targetpath, (tarinfo.mtime, tarinfo.mtime))
        except EnvironmentError as e:
            raise ExtractError("could not change modification time")

    #-------------------------------------------------------------------------- 

def touch(path, times=None):
    """Set the access and modified times of the file specified by path.

    The function calls :func:`.ensure_dir` beforehand for you.
    This is essentially a simple wrapper for :func:`os.utime`.

    Args:
        path (str): Path to the file create/modify
        times (tuple): See :func:`os.utime`

    Returns:
        bool: Whether the operation was successful or not
    """
    try:
        ensure_dir(os.path.dirname(path))
        with open(path, 'a'):
            os.utime(path, times)

    except (IOError, OSError) as error:
        from kano.logging import logger
        logger.error(
            "Could not touch {} due to permission/IO - {}"
            .format(path, error)
        )
        return False
    return True 

def resetTimestampsPosix(destFile, lastWritten, lastAccessed, recordChanged, birthTime):
    if lastWritten == None or lastAccessed == None:
        return
    try:
        lw = parse(lastWritten.value)
        la = parse(lastAccessed.value)
        os.utime(destFile, ((la - epoch).total_seconds(), (lw - epoch).total_seconds()))
    except Exception:
        traceback.print_exc()

# default implementation does nothing at present on non posix environments