AronsonDan opened a new issue, #40604:
URL: https://github.com/apache/airflow/issues/40604
### Apache Airflow version
Other Airflow 2 version (please specify below)
### If "Other Airflow 2 version" selected, which one?
2.9.0
### What happened?
When trying to expand a task group the following way:
```python
copy_into_postgres_by_company_task = (
copy_into_postgres_by_company_task_group.partial(table_name="table_name",
s3_bucket="s3_bucket",
aws_region="aws_region", ).expand(
company_id=['1', '2', '3']
))
```
and inside the task group trying to use company ID the following way:
```python
@task_group(group_id="task_group",
prefix_group_id=False)
def copy_into_postgres_by_company_task_group(*,
company_id: str,
table_name="table_name",
s3_bucket="s3_bucket",
aws_region: str = "aws_region",
postgres_conn_id: str =
"postgres_default"):
create_postgres_temp_table_destination = SQLExecuteQueryOperator(
task_id="create_postgres_temp_table_destination_task",
conn_id=postgres_conn_id,
sql="sql/create_postgres_temp_table_per_company_query.sql",
parameters={"table_name": f"{table_name}_temp_{company_id}", }
)
```
The parameter is rendered the following way:
```python
{'table_name':
"inventory_transactions_temp_MappedArgument(_input=DictOfListsExpandInput(value={'company_id':
XComArg(<Task(_PythonDecoratedOperator): prepare_company_ids>)}),
_key='company_id')"}
```
### What you think should happen instead?
I would hav expected parameters to render as:
```python
{'table_name': "inventory_transactions_temp_1"}
{'table_name': "inventory_transactions_temp_2"}
{'table_name': "inventory_transactions_temp_3"}
```
### How to reproduce
create the following DAG:
```python
@dag(
dag_id="kukuriku",
)
def kukuriku():
copy_into_postgres_by_company_task = (
copy_into_postgres_by_company_task_group.partial(table_name="table_name",
s3_bucket="s3_bucket",
aws_region="aws_region", ).expand(
company_id=['1', '2', '3']
))
```
### Operating System
Linux
### Versions of Apache Airflow Providers
_No response_
### Deployment
Official Apache Airflow Helm Chart
### Deployment details
_No response_
### Anything else?
_No response_
### Are you willing to submit PR?
- [X] 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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