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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def release_callback(self, *args, **kwargs):
 """Create a new release :returns: None :rtype: None :raises: None """

        tf = self.browser.get_current_selection()
        if not tf:
            self.statusbar.showMessage("Select a file to release, please!")
            return
        tfi = TaskFileInfo.create_from_taskfile(tf)
        checks = self.get_checks()
        cleanups = self.get_cleanups()
        comment = self.get_comment()
        r = Release(tfi, checks, cleanups, comment)
        self.statusbar.showMessage("Release in progress...")
        try:
            success = r.release()
        except OSError:
            self.statusbar.showMessage("Could not copy workfile!")
            return
        except Exception as e:
            self.statusbar.showMessage("%s" % e)
            return
        if success:
            self.statusbar.showMessage("Success!")
        else:
            self.statusbar.showMessage("Release failed!")