Code no longer working

[bowlofred]

In this case you only have one line above it. Move that line below the function, and leave a couple of blank lines below the function to serve as a visual break.

Now you can start reading your code execution from that point (and mentally ignore the stuff inside the function).

You can't use a variable (like history) unless you've assigned a value to it. The assignment inside read_history() doesn't count.

You call the function later in the for loop, and assign history at that time (line 59). You can refer to or print history anytime after that.