PragProg Customers

Python Brain Teasers: Teaser 3 wrong answer

JacobTomaw

JacobTomaw

Python Brain Teasers: Teaser 3 wrong answer

For every minor version of Python 3 I can run the code against quickly this code prints 6.

❯ for minor in `seq 2 8`; do; echo "Python 3.$minor"
docker run -it python:3.$minor python -c "print(len('Kraków'))"
done
Python 3.2
6
Python 3.3
6
Python 3.4
6
Python 3.5
6
Python 3.6
6
Python 3.7
6
Python 3.8
6

Python 2.7 the answer is 7.
Am I doing something unexpected?

3 comments
#errata/book-python-brain-teasers
10 985 3

Most Liked

JacobTomaw

JacobTomaw

I did not doubt that you have tested the code.
Your file definitely has different chars in it. Below the file /tmp/krakow has your string on the first line and mine that I typed on my Mac. Yours is o + Combining Acute Accent and mine is Latin Small Letter O with Acute. If I needed to I am sure I could figure out how to type combining acute accent, but when working through the book and seeing a char i can type with two keystrokes on my mac (option + e, o) I am going to do that. It might be valuable to note this in the book in someway.

❯ more /tmp/krakow
Kraków
Kraków

❯ xxd -b -c9 /tmp/krakow
00000000: 01001011 01110010 01100001 01101011 01101111 11001100 10000001 01110111 00001010  Krako..w.
00000009: 01001011 01110010 01100001 01101011 11000011 10110011 01110111 00001010           Krak..w.

❯ xxd  -c9 /tmp/krakow
00000000: 4b72 616b 6fcc 8177 0a  Krako..w.
00000009: 4b72 616b c3b3 770a     Krak..w.
3
Post #3
tebeka

tebeka

Author of Go Brain Teasers

Hi @JacobTomaw. It’s probably a problem in the encoding of the PDF (trust me, I tried :slight_smile: )
Take a look at the code in https://github.com/tebeka/python-brain-teasers and let me know if you have an issue - it prints 7 for me:

$ python --version
Python 3.8.3
$ python city.py  
7
2
Post #2
tebeka

tebeka

Author of Go Brain Teasers

I do doubt myself :slight_smile:

I’ll think how to clarify this in the book. Thanks!

2
Post #4

Where Next?

View thread on forum
View Python Brain Teasers's book portal
Post errata for this book
Post a suggestion for this book
Post a question about this book
Post a review about this book
Home PragProg Customers
#errata/book-python-brain-teasers
10 985 3
Last post

Popular Pragmatic Bookshelf topics Top

duke_meister
PragProg Customers

The Ray Tracer Challenge - where are the errata?
As per the title, thanks.
/book-the-ray-tracer-challenge
6 1681 4
New
ianwillie
PragProg Customers

Build Websites with Hugo: Code will not run in a working Hugo setup
Hello Brian, I have some problems with running the code in your book. I like the style of the book very much and I have learnt a lot as...
#question/book-build-websites-with-hugo
0 1501 3
New
jesse050717
PragProg Customers

Web Development with Clojure, Third Edition: Issue adding Shadow CLJS
Title: Web Development with Clojure, Third Edition, pg 116 Hi - I just started chapter 5 and I am stuck on page 116 while trying to star...
#question/book-web-development-with-clojure-third-edition
4 1199 4
New
Alexandr
PragProg Customers

Programming Machine Learning: Incorrect formula
Hi everyone! There is an error on the page 71 in the book “Programming machine learning from coding to depp learning” P. Perrotta. You c...
#errata/book-programming-machine-learning
5 1341 4
New
jdufour
PragProg Customers

The Cucumber for Java Book:
Hello! On page xix of the preface, it says there is a community forum "… for help if your’re stuck on one of the exercises in this book… ...
#question/book-the-cucumber-for-java-book
3 1143 1
New
swlaschin
PragProg Customers

Domain Modeling Made Functional: Missing diagram on page 18
The book has the same “Problem space/Solution space” diagram on page 18 as is on page 17. The correct Problem/Solution space diagrams ar...
#errata/book-domain-modeling-made-functional
1 1078 1
New
oaklandgit
PragProg Customers

Hands-on Rust: Failed to Load Texture error (page 121)
Hi, I completed chapter 6 but am getting the following error when running: thread 'main' panicked at 'Failed to load texture: IoError(O...
/book-hands-on-rust
2 1310 3
New
dsmith42
PragProg Customers

iOS Unit Testing by Example: 54 Don't seem to be getting the print out on tests (Xcode 13.2)
Hey there, I’m enjoying this book and have learned a few things alredayd. However, in Chapter 4 I believe we are meant to see the “>...
#question/book-ios-unit-testing-by-example
0 1963 3
New
EdBorn
PragProg Customers

Agile Web Development with Rails 7: (page 70)
Title: Agile Web Development with Rails 7: (page 70) I am running windows 11 pro with rails 7.0.3 and ruby 3.1.2p20 (2022-04-12 revision...
#question/book-agile-web-development-with-rails-7
0 1129 1
New
dtonhofer
PragProg Customers

The Definitive ANTLR 4 Reference - "Java.g4" grammer (used on page 40) no longer passes ANTLR
@parrt In the context of Chapter 4.3, the grammar Java.g4, meant to parse Java 6 compilation units, no longer passes ANTLR (currently 4....
#errata/book-the-definitive-antlr-4-reference
0 1020 3
New

Other popular topics Top

DevotionGeo
Backend>Chat

What is the reason behind Rust’s web framework, Rocket, not performing as well as expected in the Techempower benchmarks?
I know that these benchmarks might not be the exact picture of real-world scenario, but still I expect a Rust web framework performing a ...
#web-frameworks/rust
36 7463 11
New
AstonJ
General Dev>Code Editors

Poll: Which code editor do you use?
You might be thinking we should just ask who’s not using VSCode :joy: however there are some new additions in the space that might give V...
#community#polls/vim/emacs#code-editors/vscode#notepad/sublime-text#atom/textmate#codespaces#brackets/onivim#geany
121 5796 61
New
AstonJ
General Dev>Hardware

Poll: Which keyboard layout do you use?
poll poll Be sure to check out @Dusty’s article posted here: An Introduction to Alternative Keyboard Layouts It’s one of the best write-...
colemakmods.github.io
#polls/keyboards
10 6048 11
New
Exadra37
Linux>Chat

RancherOS is in end of life
Oh just spent so much time on this to discover now that RancherOS is in end of life but Rancher is refusing to mark the Github repo as su...
#linux#rancheros
10 6358 6
New
PragmaticBookshelf
Backend>Learning Resources

Concurrent Data Processing in Elixir
Learn different ways of writing concurrent code in Elixir and increase your application's performance, without sacrificing scalability or...
pragprog.com
#pragprog/elixir#published-book/book-concurrent-data-processing-in-elixir
78 6059 24
New
Maartz
General Dev>Dev Chat

Roc Language - a new purely functional programming language built for speed and ergonomics
Hi folks, I don’t know if I saw this here but, here’s a new programming language, called Roc Reminds me a bit of Elm and thus Haskell. ...
#programminguages#functional-programming
49 5164 14
New
mafinar
Backend>Chat

Data Structures and Algorithms with Elixir
This is going to be a long an frequently posted thread. While talking to a friend of mine who has taken data structure and algorithm cou...
/elixir#algorithms#data-structures
108 11869 31
New
First poster: CommunityNews
AI>In The News

How to fix the eyes in AI-generated images
aidemos.info
0 4508 0
New
PragmaticBookshelf
General Dev>Learning Resources

A Common-Sense Guide to Data Structures and Algorithms in Python, Volume 1
Big O Notation can make your code faster by orders of magnitude. Get the hands-on info you need to master data structures and algorithms ...
pragprog.com
#pragprog/python#published-book/book-a-common-sense-guide-to-data-structures-and-algorithms-in-python-volume-1
24 5988 11
New
RobertRichards
Game Dev>Chat

Hair Salon Games for Girls Fun
Hair Salon Games for Girls Fun Girls Hair Saloon game is mainly developed for kids. This game allows users to select virtual avatars to ...
#ios#android#unity#fun
2 3556 1
New
Back to top

Latest in Python Brain Teasers

Python Brain Teasers Portal ❯

PragProg Customers

Pragmatic Bookshelf PragProg Customers ❯

Latest on Devtalk

Devtalk ❯

We ❤️ helpful members!

We reward our most helpful members via our MOTM scheme - by giving away a whopping 25 books per year!

Member of the Month

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Honeybadger

Real-time error tracking, performance insights, and observability for devs.

EEF

Supporting innovation across the BEAM ecosystem.

coders51

We build reliable cloud platforms for business-critical systems.

Manning Publications

Develop your skills with books, videos, and courses.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

Categories:

Sub Categories:

Popular Portals

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Honeybadger

Real-time error tracking, performance insights, and observability for devs.

EEF

Supporting innovation across the BEAM ecosystem.

coders51

We build reliable cloud platforms for business-critical systems.

Manning Publications

Develop your skills with books, videos, and courses.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

We're in Beta

About us Mission Statement See our Roadmap