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friendly_traceback and friendly help users understand what caused a given exception in their Python program, and how to fix it.

There exists many Python projects whose primary goal is to supplement the information given by Python traceback to make them more useful for advanced programmers. To my knowledge, of all those projects, friendly/friendly_traceback are the only ones designed with beginners in mind.

To be more specific, while friendly can be useful for advanced programmers, it strives to present the information in a way that is easily understood by beginners and/or by users who would like to get information about traceback in their own language. friendly can give more detailed information as to where an exception occurred, what a given exception means and why it might have occurred (sometimes adding suggestions as to how to fix it.)

Even though friendly can be used on its own with a specially designed console, a better option might be to use it together with GUI-based editors/IDE including JupyterLab and Jupyter notebooks. I explain how to do so later. For now, I’ll just show one quick example.

# example.py
def get_last(seq):
    last_index = len(seq)
    return seq[last_index]

print(get_last([1, 2, 3]))