ephraimbuddy opened a new issue #11666:
URL: https://github.com/apache/airflow/issues/11666
**Apache Airflow version**: 2.0
**Kubernetes version (if you are using kubernetes)** (use `kubectl version`):
**Environment**: Docker
- **Cloud provider or hardware configuration**:
- **OS** (e.g. from /etc/os-release): Ubuntu
- **Kernel** (e.g. `uname -a`):
- **Install tools**:
- **Others**:
**What happened**:
The PythonVirtualenvOperator failed because it couldn't find the
python_virtualenv_script.jinja2 in jinja2 environment
**What you expected to happen**:
I expected it to run without errors
**How to reproduce it**:
Run the provided example dag:
```
from airflow import DAG
from airflow.operators.python import PythonVirtualenvOperator
from airflow.utils.dates import days_ago
dag = DAG(
dag_id='virtualenv_python_operator',
default_args={"owner: Airflow"},
schedule_interval="@once",
start_date=days_ago(2),
tags=['example']
)
def callable_virtualenv():
"""
Example function that will be performed in a virtual environment.
Importing at the module level ensures that it will not attempt to import
the
library before it is installed.
"""
from time import sleep
from colorama import Back, Fore, Style
print(Fore.RED + 'some red text')
print(Back.GREEN + 'and with a green background')
print(Style.DIM + 'and in dim text')
print(Style.RESET_ALL)
for _ in range(10):
print(Style.DIM + 'Please wait...', flush=True)
sleep(10)
print('Finished')
virtualenv_task = PythonVirtualenvOperator(
task_id="virtualenv_python",
python_callable=callable_virtualenv,
requirements=[
"colorama==0.4.0"
],
system_site_packages=False,
dag=dag,
)
```
**Anything else we need to know**:
The above dag produces the error below in log:
```
[2020-10-19 19:15:03,694] {taskinstance.py:1348} ERROR -
python_virtualenv_script.jinja2
Traceback (most recent call last):
File
"/usr/local/lib/python3.7/site-packages/airflow/models/taskinstance.py", line
1087, in _run_raw_task
self._prepare_and_execute_task_with_callbacks(context, task)
File
"/usr/local/lib/python3.7/site-packages/airflow/models/taskinstance.py", line
1209, in _prepare_and_execute_task_with_callbacks
result = self._execute_task(context, task_copy)
File
"/usr/local/lib/python3.7/site-packages/airflow/models/taskinstance.py", line
1254, in _execute_task
result = task_copy.execute(context=context)
File "/usr/local/lib/python3.7/site-packages/airflow/operators/python.py",
line 485, in execute
super().execute(context=serializable_context)
File "/usr/local/lib/python3.7/site-packages/airflow/operators/python.py",
line 140, in execute
return_value = self.execute_callable()
File "/usr/local/lib/python3.7/site-packages/airflow/operators/python.py",
line 514, in execute_callable
filename=script_filename
File
"/usr/local/lib/python3.7/site-packages/airflow/utils/python_virtualenv.py",
line 92, in write_python_script
template = template_env.get_template('python_virtualenv_script.jinja2')
File "/usr/local/lib/python3.7/site-packages/jinja2/environment.py", line
883, in get_template
return self._load_template(name, self.make_globals(globals))
File "/usr/local/lib/python3.7/site-packages/jinja2/environment.py", line
857, in _load_template
template = self.loader.load(self, name, globals)
File "/usr/local/lib/python3.7/site-packages/jinja2/loaders.py", line 115,
in load
source, filename, uptodate = self.get_source(environment, name)
File "/usr/local/lib/python3.7/site-packages/jinja2/loaders.py", line 197,
in get_source
raise TemplateNotFound(template)
jinja2.exceptions.TemplateNotFound: python_virtualenv_script.jinja2
```
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