Code Calamity

Exception! Exception! Read all about it!

January 24, 2017 by Chris Griffith

Exceptions in Python aren’t new, and pretty easy to wrap your head around. Which means you should have no trouble following what this example will output.

import warnings

def bad_func():
    try:
        assert False and True or False
    except AssertionError as outer_err:
        try:
            assert None is False
        except AssertionError as inner_err:
            warnings.warn("None is not False", UserWarning)
            raise inner_err from None
        else:
            return None
    else:
        return True
    finally:
        return False


print(bad_func())

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import warnings

def bad_func():

try:

assert False and True or False

except AssertionError as outer_err:

try:

assert None is False

except AssertionError as inner_err:

warnings.warn("None is not False", UserWarning)

raise inner_err from None

else:

return None

else:

return True

finally:

return False

print(bad_func())

Simple, right? It raises both except clauses, triggering the warning and so your screen will obviously print False and the warning.

False
C:/python_file.py:15: UserWarning: None is not False
  warnings.warn("None is not False", UserWarning)

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False

C:/python_file.py:15: UserWarning: None is not False

warnings.warn("None is not False", UserWarning)

So if you followed that without issue and … [Read more…]

Book Review: Violent Python

January 6, 2017 by Chris Griffith

I had the great pleasure of learning directly from Mark Baggett, the Technical Editor of Violent Python, during his Python for Penetration Testers SANS class. Violent Python book was the basis for many of the things done during the week-long training. I totally don’t mean to brag, but I aced that training, beat all the challenges, … [Read more…]

The Documentation Dilemma

December 28, 2016 by Chris Griffith

Every coder will come across the same aggravating issue one day, finding a script or library you think you need, and it has zero instructions. Or the examples don’t work, or there is so much writing and so little substance you can’t hope to dig through it all to discover how it’s meant to be … [Read more…]

Your first date with Python logging

December 11, 2016 by Chris Griffith

Logging vs Print The difference between logging and using print isn’t simply personal preference, rather choosing the proper tool per use case. Check out the Python docs when to use logging if you don’t believe me. If you are simply using Python to write scripts with clear paths and failure on error, it’s perfectly reasonable to not have … [Read more…]

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Exception! Exception! Read all about it!

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