I collect these FAQ from discuss.codeacademy.com

Question.
Within the context of this exercise 133 which introduces the print() function, are quotes always necessary inside of the print()?

Answer.
Quotes are not always necessary inside of a print() function. They are only needed when the input value of the function is a string, like "hello", which you will learn more about in exercise 4. print() functions can be used to output many other values in Python, such as:

https://content.codecademy.com/courses/learn-cpp/hello-world/block-letters-hint.png