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?

10 981 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.
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
tebeka

tebeka

Author of Go Brain Teasers

I do doubt myself :slight_smile:

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

Where Next?

Popular Pragmatic Bookshelf topics Top

abtin
page 20: … protoc command… I had to additionally run the following go get commands in order to be able to compile protobuf code using go...
14 2929 7
New
jeffmcompsci
Title: Design and Build Great Web APIs - typo “https://company-atk.herokuapp.com/2258ie4t68jv” (page 19, third bullet in URL list) Typo:...
8 1923 7
New
edruder
I thought that there might be interest in using the book with Rails 6.1 and Ruby 2.7.2. I’ll note what I needed to do differently here. ...
9 1173 1
New
herminiotorres
Hi! I know not the intentions behind this narrative when called, on page XI: mount() |> handle_event() |> render() but the correc...
3 1296 17
New
AleksandrKudashkin
On the page xv there is an instruction to run bin/setup from the main folder. I downloaded the source code today (12/03/21) and can’t see...
2 1425 11
New
adamwoolhether
I’m not quite sure what’s going on here, but I’m unable to have to containers successfully complete the Readiness/Liveness checks. I’m im...
5 1406 5
New
brunogirin
When trying to run tox in parallel as explained on page 151, I got the following error: tox: error: argument -p/–parallel: expected one...
0 1105 1
New
rainforest
Hi, I’ve got a question about the implementation of PubSub when using a Phoenix.Socket.Transport behaviour rather than channels. Before ...
0 1506 3
New
SlowburnAZ
Getting an error when installing the dependencies at the start of this chapter: could not compile dependency :exla, "mix compile" failed...
1 1103 10
New
dachristenson
I’ve got to the end of Ch. 11, and the app runs, with all tabs displaying what they should – at first. After switching around between St...
0 897 8
New

Other popular topics Top

Exadra37
Please tell us what is your preferred monitor setup for programming(not gaming) and why you have chosen it. Does your monitor have eye p...
227 8684 88
New
AstonJ
Curious to know which languages and frameworks you’re all thinking about learning next :upside_down_face: Perhaps if there’s enough peop...
243 5922 95
New
AstonJ
There’s a whole world of custom keycaps out there that I didn’t know existed! Check out all of our Keycaps threads here: https://forum....
15 8183 19
New
AstonJ
Thanks to @foxtrottwist’s and @Tomas’s posts in this thread: Poll: Which code editor do you use? I bought Onivim! :nerd_face: https://on...
88 5364 32
New
AstonJ
I ended up cancelling my Moonlander order as I think it’s just going to be a bit too bulky for me. I think the Planck and the Preonic (o...
105 14440 47
New
AstonJ
Do the test and post your score :nerd_face: :keyboard: If possible, please add info such as the keyboard you’re using, the layout (Qw...
82 6920 31
New
PragmaticBookshelf
Build efficient applications that exploit the unique benefits of a pure functional language, learning from an engineer who uses Haskell t...
15 5398 1
New
PragmaticBookshelf
Author Spotlight Mike Riley @mriley This month, we turn the spotlight on Mike Riley, author of Portable Python Projects. Mike’s book ...
62 6351 19
New
PragmaticBookshelf
Author Spotlight: Bruce Tate @redrapids Programming languages always emerge out of need, and if that’s not always true, they’re defin...
54 4591 23
New
CommunityNews
A Brief Review of the Minisforum V3 AMD Tablet. Update: I have created an awesome-minisforum-v3 GitHub repository to list information fo...
0 1782 0
New

Sub Categories: