Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Python Flask Basics Character Builder Cookies

Suneet Badoni
Suneet Badoni
4,515 Points

Confusion understanding variable scoping.

In line 13 def index() : return render_template("index.html", saves=data)

Is data a global variable? How is it accessible to index function?

1 Answer


At 7:00 he defines data in the scope of the function. Directly above the line in question. Here is his final code:

def index():
    data = get_saved_data()
    return render_template('index.html', saves=data)
Suneet Badoni
Suneet Badoni
4,515 Points

hi Philip. Thanks a lot for answering. Yes i missed it somehow. I am new to python as well as flask and wsgi libraries. I am having a hard time grasping what is available at global scope and what is not. There is a lot of "magic" that happens behind the scene and it's tough to grasp for a newbie like me.

This is a fun read. I actually don't know python. I just have fun answering questions about it :)