Starting issue

[pchang20]

I followed your Tutorial, but at the begging step, when I created the file hello_lulu.ipynb, it didn't allow me to run the code:
File "hello_lulu.ipynb", line 7, in
"collapsed": false
NameError: name 'false' is not defined.

It's probably a silly question, but I can't figure out where I made mistakes.