How to use the taskcluster.stringDate function in taskcluster

def artifacts(self):
        return {
            apk.taskcluster_path: {
                'type': 'file',
                'path': apk.absolute_path,
                'expires': taskcluster.stringDate(taskcluster.fromNow('1 year')),
            } for apk in self._apks
        }

LOG.debug("Original task: (Limit 1024 char)")
    LOG.debug(str(json.dumps(task))[:1024])

    artifacts = task['payload'].get('artifacts', {})
    for artifact, definition in artifacts.iteritems():
        definition['expires'] = taskcluster_client.fromNow('%s days' % 365)

    # https://bugzilla.mozilla.org/show_bug.cgi?id=1190660
    # TC workers create public logs which are 365 days; if the task expiration
    # date is the same or less than that we won't have logs for the task
    task['expires'] = taskcluster_client.fromNow('%s days' % (365 + 1))
    now = datetime.datetime.utcnow()
    tomorrow = now + datetime.timedelta(hours=24)
    task['created'] = taskcluster_client.stringDate(now)
    task['deadline'] = taskcluster_client.stringDate(tomorrow)

    LOG.debug("Contents of new task: (Limit 1024 char)")
    LOG.debug(str(task)[:1024])

    return task

LOG.debug("Original task: (Limit 1024 char)")
    LOG.debug(str(json.dumps(task))[:1024])

    artifacts = task['payload'].get('artifacts', {})
    for artifact, definition in artifacts.iteritems():
        definition['expires'] = taskcluster_client.fromNow('%s days' % 365)

    # https://bugzilla.mozilla.org/show_bug.cgi?id=1190660
    # TC workers create public logs which are 365 days; if the task expiration
    # date is the same or less than that we won't have logs for the task
    task['expires'] = taskcluster_client.fromNow('%s days' % (365 + 1))
    now = datetime.datetime.utcnow()
    tomorrow = now + datetime.timedelta(hours=24)
    task['created'] = taskcluster_client.stringDate(now)
    task['deadline'] = taskcluster_client.stringDate(tomorrow)

    LOG.debug("Contents of new task: (Limit 1024 char)")
    LOG.debug(str(task)[:1024])

    return task

def create_fxaclient_task():
    created = datetime.datetime.now()
    expires = taskcluster.fromNow('1 year')
    deadline = taskcluster.fromNow('1 day')

    return {
        "workerType": 'github-worker',
        "taskGroupId": TASK_ID,
        "expires": taskcluster.stringDate(expires),
        "retries": 5,
        "created": taskcluster.stringDate(created),
        "tags": {},
        "priority": "lowest",
        "schedulerId": "taskcluster-github",
        "deadline": taskcluster.stringDate(deadline),
        "dependencies": [TASK_ID],
        "routes": [],
        "scopes": [],
        "requires": "all-completed",
        "payload": {
            "features": {},
            "maxRunTime": 7200,
            "image": "mozillamobile/rust-component:buildtools-27.0.3-ndk-r15c-ndk-version-21-rust-stable-1.28.0-rust-beta-1.29.0-beta.15",
            "command": [
                "/bin/bash",

LOG.debug("Updating timestamps of task.")

    LOG.debug("Original task: (Limit 1024 char)")
    LOG.debug(str(json.dumps(task))[:1024])

    artifacts = task['payload'].get('artifacts', {})
    for artifact, definition in artifacts.iteritems():
        definition['expires'] = taskcluster_client.fromNow('%s days' % 365)

    # https://bugzilla.mozilla.org/show_bug.cgi?id=1190660
    # TC workers create public logs which are 365 days; if the task expiration
    # date is the same or less than that we won't have logs for the task
    task['expires'] = taskcluster_client.fromNow('%s days' % (365 + 1))
    now = datetime.datetime.utcnow()
    tomorrow = now + datetime.timedelta(hours=24)
    task['created'] = taskcluster_client.stringDate(now)
    task['deadline'] = taskcluster_client.stringDate(tomorrow)

    LOG.debug("Contents of new task: (Limit 1024 char)")
    LOG.debug(str(task)[:1024])

    return task

LOG.debug("Updating timestamps of task.")

    LOG.debug("Original task: (Limit 1024 char)")
    LOG.debug(str(json.dumps(task))[:1024])

    artifacts = task['payload'].get('artifacts', {})
    for artifact, definition in artifacts.iteritems():
        definition['expires'] = taskcluster_client.fromNow('%s days' % 365)

    # https://bugzilla.mozilla.org/show_bug.cgi?id=1190660
    # TC workers create public logs which are 365 days; if the task expiration
    # date is the same or less than that we won't have logs for the task
    task['expires'] = taskcluster_client.fromNow('%s days' % (365 + 1))
    now = datetime.datetime.utcnow()
    tomorrow = now + datetime.timedelta(hours=24)
    task['created'] = taskcluster_client.stringDate(now)
    task['deadline'] = taskcluster_client.stringDate(tomorrow)

    LOG.debug("Contents of new task: (Limit 1024 char)")
    LOG.debug(str(task)[:1024])

    return task

def _craft_base_task(self, name, extend_task):
        return {
            'taskGroupId': self.task_group_id,
            'schedulerId': 'taskcluster-github',
            'created': taskcluster.stringDate(datetime.datetime.now()),
            'deadline': taskcluster.stringDate(taskcluster.fromNow('1 day')),
            'metadata': {
                'name': name,
                'description': '',
                'owner': self.owner,
                'source': f'{self.repo_url}/raw/{self.commit}/.taskcluster.yml',
            },
            **extend_task
        }