Don't ever take this one!!!
The reason- they used a Code Sculptor to write, and submit a programms.
this have two bad results:
1) Code Sculptor used 2 version of Python, not a 3d. 2d version is outdated
2) when you write a simple loop in Code Sculptor , that in each step ask you type a number and then print out this number- it will not work in Code Sculptor as you expected. Instead it will print out this numbers only when terminated a loop
Instead of this one I reccomend a similliar course from university of Toronto or from Welsley