foldvari opened a new issue, #34133:
URL: https://github.com/apache/airflow/issues/34133
### Apache Airflow version
Other Airflow 2 version (please specify below)
### What happened
Before upgrading to v2.6.3 from v2.5.3 we relied on that a NamedTuple can be
a return value from a @task annotated task.
After upgrading to v.2.6.3 these tasks are failing with TypeError: Object of
type MyClass is not JSON serializable
### What you think should happen instead
New version should be backwards compatible and should continue supporting
NamedTuples on XCOM.
### How to reproduce
```python
@task()
def a():
class MyClass(NamedTuple):
a: str
b: int
value = MyClass('A', 42)
return value
```
### Operating System
Debian GNU/Linux 11 (bullseye)
### Versions of Apache Airflow Providers
```
apache-airflow-providers-amazon==7.3.0
apache-airflow-providers-celery==3.1.0
apache-airflow-providers-cncf-kubernetes==5.2.2
apache-airflow-providers-common-sql==1.3.4
apache-airflow-providers-docker==3.5.1
apache-airflow-providers-elasticsearch==4.4.0
apache-airflow-providers-ftp==3.3.1
apache-airflow-providers-google==8.11.0
apache-airflow-providers-grpc==3.1.0
apache-airflow-providers-hashicorp==3.3.0
apache-airflow-providers-http==2.0.3
apache-airflow-providers-imap==3.1.1
apache-airflow-providers-microsoft-azure==5.2.1
apache-airflow-providers-microsoft-winrm==2.0.2
apache-airflow-providers-mysql==4.0.2
apache-airflow-providers-odbc==3.2.1
apache-airflow-providers-postgres==5.4.0
apache-airflow-providers-redis==3.1.0
apache-airflow-providers-samba==2.0.0
apache-airflow-providers-sendgrid==3.1.0
apache-airflow-providers-sftp==2.4.1
apache-airflow-providers-slack==7.2.0
apache-airflow-providers-snowflake==4.0.4
apache-airflow-providers-sqlite==3.3.1
apache-airflow-providers-ssh==3.5.0
```
### Deployment
Official Apache Airflow Helm Chart
### Deployment details
_No response_
### Anything else
_No response_
### Are you willing to submit PR?
- [ ] Yes I am willing to submit a PR!
### Code of Conduct
- [X] I agree to follow this project's [Code of
Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
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