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Project Description

TBVaccine is a utility that pretty-prints Python tracebacks. It automatically highlights lines you care about and deemphasizes lines you don’t, and colorizes the various elements in a traceback to make it easier to parse.

Here are some screenshots. This is the before:

And this is the after:

If you add the hook or call TBVaccine in your code, it can also print all variables in each stack frame. That is, it turns this:

into this:

Installation

To install, use pip:

pip install tbvaccine

You are done!

Usage as a command-line utility

TBVaccine can be used from the command line several ways.:

python -m tbvaccine myscript.py

Or just pipe STDERR into it from the program you want to watch:

./myscript.py 2>&1 | tbvaccine

And all the tracebacks will now be pretty!

Usage as a Python library

There are various ways to use TBVaccine as a Python library.

Initialize it like so:

from tbvaccine import TBVaccine
tbv = TBVaccine(
    code_dir="/my/code/dir",
    isolate=True
)

code_dir marks the directory we code about. Files under that directory that appear in the traceback will be highlighted. If not passed, the current directory, as returned by os.getcwd() will be used.

If isolate is False, all lines are colorized, and code_dir is ignored.

If show_vars is False, variables will not be printed in each stack frame.

To use it in an except block:

from tbvaccine import TBVaccine
try:
    some_stuff()
except:
    print(TBVaccine().format_exc())

To make it the default way of printing tracebacks, use add_hook() (which also accepts any argument the TBVaccine class does):

import tbvaccine
tbvaccine.add_hook(isolate=False)

1 / 0

Bam! Instant pretty tracebacks.

Epilogue

This library is still pretty new, please contribute patches if something doesn’t work as intended, and also please tell your friends about it! Hopefully one day it will be implemented in the Python interpreters themselves.

– Stavros

Release History

Release History

0.1.2

This version

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0.1.1

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0.1.0

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0.0.3

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0.0.2

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0.0.1

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TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
tbvaccine-0.1.2-py2-none-any.whl (9.2 kB) Copy SHA256 Checksum SHA256 py2 Wheel May 20, 2017
tbvaccine-0.1.2.tar.gz (6.2 kB) Copy SHA256 Checksum SHA256 Source May 20, 2017

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