Lỗi NameError: name is not defined

[Tung_Lam_s (Tùng Lâm's)]

There are 10 types of people.
those who know binary anh those who don’t
I said ‘There are 10 types of people.’.
I also said : 'those who know binary anh those wh
Traceback (most recent call last):
File “.\ex6.py”, line 13, in
print joke_evaluation % hilariuos
NameError: name ‘joke_evaluation’ is not defined

[truongphamit (Truong Pham)]

name không được định nghĩa. Bạn nên nói thêm ngon ngữ gì và đưa code lên đây