# A simple code example
```python
#| TASK {id=a, title=My Task} <<
def somefunc(a):
#| CODE <<
# ...
# more code
#| Markup here
#| More markup
#| >> SOLUTION <<
# Comments
#| Markup
print(a)
return 2*a
#| >> END_CODE
#| >> END_TASK
#| TEST {task=a} <<
assert somefunc(5) == 10
assert somefunc(10) == 20
#| >> END_TEST
```