It's also important to recognize what is part of an If-statement.
Python uses indentation to convey this.
Notice that lines 4 and 5 are indented under the If-statement on line 3.
This means they are part of the If-statement and will be executed if sky_is_blue is True
Also notice line 7 is NOT indented, so it's not part of the If-Statement and will be executed regardless.
Run through the code to see this!
As a quick exercise, click the Edit Code button and change sky_is_blue to True and run it again!
