I see you do not understand your mistake. Hopefully this will clarify.
Read the instructions inside the gray lines.
# Call inAttackRange(enemy), with the enemy as the argument
# and save the result in the variable canAttack.
Use what you have learned in previous levels to solve this. First call in inAttackRange, as the gray line has said. The code for calling inAttackRange is right there. Then to the left of it, assign it to variable canAttack (something you learned in dungeon).
# If the result stored in canAttack is True, then attack!
After that, write an if statement saying if canAttack is true, attack.