def __init__(self, package, running, available, release_date):
self.available_version = available<EOL>self.package_name = package<EOL>self.running_version = running<EOL>if release_date:<EOL><INDENT>self.release_date = datetime.strptime(release_date,<EOL>'<STR_LIT>')<EOL><DEDENT>else:<EOL><INDENT>self.release_date = None<EOL><DEDENT>
Initialize an UpdateResult instance.