Python local vs global variables

Question

I understand the concept of local and global variables in Python, but I just have a question about why the error comes out the way it is in the following code. Python execut

Answer 1

Python doesn't execute line by line in the function code you submitted. It has first to parse it as a bloc of execution. It decides if a variable is local or global depending if it is written at (function) local level. As it is the case, it decides that the variable is local, hence the error.