Code Formatting and Documentation

[ijacobs-cpa]

Code formatting:

Having non-function code around (above and below) your functions makes it a bit confusing to understand how the code flows. Maybe consider grouping the functions in one area and having the non-function code below (or above) the functions to stand out. Also maybe include a main() (non-issue) so that it looks more clearer to a user.

Your code could also use a bit more documentation to explain what is happening at certain lines of code (For example in your process_txt_file() function adding more comments when opening a file for reading/writing)

[mingming-ma]

Fix this issue in this commit 0aaff97