I have a pandas data frame with two columns: source and sink. In a simplified form, there are just 5 users (source column) that can owe money to any other user (sink column).
I thought the following code would show the plot of user 1 owing to user 3 (yes arrow is correct, good), user 2 to 4 (good), 3 to 5 (good), 4 to 1 (wrong), 5 to 2 (wrong). What should I do to get the last two arrows to point in the right direction?