Owner

AllenDowney

5 indexed repositories · View on GitHub

ThinkPython
Jupyter notebooks and other resources for Think Python by Allen Downey, published by O'Reilly Media.

Jupyter Notebook · 2739 stars
ThinkBayes2
Text and code for the second edition of Think Bayes, by Allen Downey.

Jupyter Notebook · 2081 stars
LittleBookOfSemaphores
LaTeX source and supporting code for The Little Book of Semaphores, by Allen Downey.

TeX · 329 stars
ThinkPythonSolutions
Development repo for Think Python 3rd edition

Jupyter Notebook · 232 stars
empiricaldist
Python library that represents empirical distribution functions.

Jupyter Notebook · 178 stars

Beginner friendly Everything

Open All

Add an introduction or exercise for dataclass in Ch. 18? Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

AllenDowney/ThinkPython#77 · Opened Jun 30, 2026
Enhancement idea for probability() function from chapter 1 Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

AllenDowney/ThinkBayes2#85 · Opened Apr 16, 2026
Model selection in The Raven Paradox Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

AllenDowney/ThinkBayes2#83 · 1 comment · Opened Dec 29, 2025
Make repr_html show the name of the Dist Open

AllenDowney/empiricaldist#33 · 1 assignee · Opened Oct 20, 2025
No such file or directory: 'header_latex.ipynb' Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

AllenDowney/ThinkPythonSolutions#14 · 2 comments · Opened Oct 2, 2025
Incorrect likelihood function in the Rabbit Camera Trap Exercise [Chapter 5] Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

AllenDowney/ThinkBayes2#82 · 1 comment · Opened Sep 19, 2025
add ThinkBayes2 to pypi Open

Difficulty 3/5 1-2 days Newbie friendliness 28/100

AllenDowney/ThinkBayes2#78 · 3 comments · Opened Jun 10, 2025
Hilzer’s Barbershop problem not consistency notation Open

Difficulty 1/5 Under an hour Newbie friendliness 45/100

AllenDowney/LittleBookOfSemaphores#39 · 1 reaction · Opened Apr 6, 2025
Reading count value outside of mutex in Barrier solution Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

AllenDowney/LittleBookOfSemaphores#35 · Opened Nov 17, 2023
Missing variables in `Faneuil Hall problem hint` Open

Difficulty 1/5 Under an hour Newbie friendliness 55/100

AllenDowney/LittleBookOfSemaphores#32 · 1 reaction · Opened May 7, 2023
Kindle or phone friendly version? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

AllenDowney/LittleBookOfSemaphores#24 · 2 comments · Opened Dec 27, 2022
Move notebooks and clean up dependency Open

Difficulty 2/5 1-3 hours Newbie friendliness 50/100

AllenDowney/empiricaldist#27 · Opened Sep 2, 2022
Clarify the rules of the Sushi Bar problem Open

Difficulty 2/5 1-3 hours Newbie friendliness 38/100

AllenDowney/LittleBookOfSemaphores#20 · 1 comment · Opened Dec 22, 2021
Another batch of proposed fixes Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

AllenDowney/LittleBookOfSemaphores#17 · 1 comment · Opened Jan 3, 2021
A handful of Makefile fixes Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

AllenDowney/LittleBookOfSemaphores#16 · Opened Jan 2, 2021
include penalties in SAT problem Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

AllenDowney/ThinkBayes2#29 · Opened Aug 11, 2020
I have problem in Cookie solution Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

AllenDowney/ThinkBayes2#19 · 1 comment · Opened Feb 7, 2020
"Queue" Open

Difficulty 2/5 1-3 hours Newbie friendliness 42/100

AllenDowney/LittleBookOfSemaphores#15 · 1 comment · 1 reaction · Opened Sep 3, 2019
"Context switch" used without being defined Open

Difficulty 2/5 1-3 hours Newbie friendliness 65/100

AllenDowney/LittleBookOfSemaphores#14 · Opened Sep 3, 2019
Add example code listed in the book's Web page to this repository Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

AllenDowney/LittleBookOfSemaphores#12 · Opened May 21, 2019
kidney.py not executing Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

AllenDowney/ThinkBayes2#15 · Opened May 4, 2019
How tall is A? Open

Difficulty 3/5 1-2 days Newbie friendliness 30/100

AllenDowney/ThinkBayes2#14 · Opened Apr 27, 2019
TypeError: '<' not supported between instances of 'Pmf' and 'Pmf' Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

AllenDowney/ThinkBayes2#13 · 1 comment · Opened Apr 18, 2019
Design review: Cdf sampling Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

AllenDowney/empiricaldist#18 · Opened Apr 11, 2019
Design review: Cdf statistics Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

AllenDowney/empiricaldist#17 · Opened Apr 11, 2019
Design review: evaluating Cdfs Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

AllenDowney/empiricaldist#16 · Opened Apr 11, 2019
Design review: Cdf selection Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

AllenDowney/empiricaldist#15 · Opened Apr 11, 2019
Design review: make Cdf from sequence Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

AllenDowney/empiricaldist#14 · Opened Apr 11, 2019
Design review: displaying Cdfs Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

AllenDowney/empiricaldist#13 · Opened Apr 11, 2019
Design review: Cdf sharing Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

AllenDowney/empiricaldist#12 · Opened Apr 11, 2019
Design review: Cdf constructor Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

AllenDowney/empiricaldist#11 · Opened Apr 11, 2019
Design review: Pmf joint distributions Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

AllenDowney/empiricaldist#10 · Opened Apr 10, 2019
Design review: Pmf arithmetic Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

AllenDowney/empiricaldist#9 · 1 reaction · Opened Apr 10, 2019
Design review: Pmf random choice/sample Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

AllenDowney/empiricaldist#8 · Opened Apr 10, 2019
Design review: Pmf statistics methods Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

AllenDowney/empiricaldist#7 · Opened Apr 10, 2019
Design review: Pmf selection/indexing Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

AllenDowney/empiricaldist#6 · Opened Apr 10, 2019
Design review: making Pmf from sequence Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

AllenDowney/empiricaldist#5 · Opened Apr 10, 2019
Design review: displaying Pmfs Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

AllenDowney/empiricaldist#4 · Opened Apr 10, 2019
Design review: Pmf sharing Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

AllenDowney/empiricaldist#3 · Opened Apr 10, 2019
Design review: Pmf properties Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

AllenDowney/empiricaldist#2 · Opened Apr 10, 2019
Design review: Pmf constructor Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

AllenDowney/empiricaldist#1 · Opened Apr 10, 2019
Mutex acquired by a thread should be released by same thread Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

AllenDowney/LittleBookOfSemaphores#10 · 1 comment · Opened Feb 2, 2019
Unclear problem in 'Reusable barrier problem #1' Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

AllenDowney/LittleBookOfSemaphores#9 · 2 comments · Opened Feb 2, 2019
Installation > Lots of ResolvePackagNotFound errors Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

AllenDowney/ThinkBayes2#12 · 2 reactions · Opened Nov 10, 2018
Key result in chapter 10 sensitive to jittering Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

AllenDowney/ThinkBayes2#9 · 2 comments · Opened Mar 20, 2018
Multi-Phase reusable Barrier class Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

AllenDowney/LittleBookOfSemaphores#7 · 2 reactions · Opened Jan 19, 2018
Errors with the Euro examples... Open

Difficulty 3/5 1-2 days Newbie friendliness 40/100

AllenDowney/ThinkBayes2#7 · Opened Oct 28, 2017
Concurrent Updates 1.5.2 Clarification Suggestion Open

Difficulty 1/5 Under an hour Newbie friendliness 45/100

AllenDowney/LittleBookOfSemaphores#5 · Opened Aug 6, 2017
Translate to Persian Language Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

AllenDowney/LittleBookOfSemaphores#3 · Opened May 13, 2017
V and P meaning Open

Difficulty 1/5 Under an hour Newbie friendliness 45/100

AllenDowney/LittleBookOfSemaphores#1 · 1 comment · Opened Apr 2, 2017

AllenDowney

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