[GitHub] [airflow] eladkal commented on pull request #17349: #16037 Add support for passing templated requirements.txt in PythonVirtualenvOperator

[GitBox <gi...@apache.org>]

eladkal commented on pull request #17349:
URL: https://github.com/apache/airflow/pull/17349#issuecomment-961879110


   @rounakdatta can you please take a look at the error?
   ```
     ERROR [airflow.models.dagbag.DagBag] Failed to import: /opt/airflow/airflow/example_dags/tutorial_taskflow_api_etl_virtualenv.py
     Traceback (most recent call last):
       File "/opt/airflow/airflow/models/dagbag.py", line 331, in _load_modules_from_file
         loader.exec_module(new_module)
       File "<frozen importlib._bootstrap_external>", line 850, in exec_module
       File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
       File "/opt/airflow/airflow/example_dags/tutorial_taskflow_api_etl_virtualenv.py", line 22, in <module>
         from airflow.decorators import dag, task
       File "/opt/airflow/airflow/decorators/__init__.py", line 20, in <module>
         from airflow.decorators.python import PythonDecoratorMixin, python_task  # noqa
       File "/opt/airflow/airflow/decorators/python.py", line 21, in <module>
         from airflow.operators.python import PythonOperator
       File "/opt/airflow/airflow/operators/python.py", line 252, in <module>
         class PythonVirtualenvOperator(PythonOperator):
       File "/opt/airflow/airflow/operators/python.py", line 341, in PythonVirtualenvOperator
         requirements: Optional[Iterable[str], str] = None,
       File "/usr/local/lib/python3.9/typing.py", line 275, in inner
         return func(*args, **kwds)
       File "/usr/local/lib/python3.9/typing.py", line 352, in __getitem__
         return self._getitem(self, parameters)
       File "/usr/local/lib/python3.9/typing.py", line 475, in Optional
         arg = _type_check(parameters, f"{self} requires a single type.")
       File "/usr/local/lib/python3.9/typing.py", line 164, in _type_check
         raise TypeError(f"{msg} Got {arg!r:.100}.")
     TypeError: typing.Optional requires a single type. Got (typing.Iterable[str], <class 'str'>).
   ```


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