PS: I've been wanting to build this ever since I watched Brandon Rhodes' North Bay Python 2017 keynote! https://www.youtube.com/watch?v=rrMnmLyYjU8

It's a talk about (in Brandon's words) ASCII art animation, software architecture, the mysteries of UNIX terminal settings, and the glories of Plain Text. You should totally check it out!

PPS: In case you're interested in speaker notes, I used `present` + tmux + a keylogger + reveal.js speaker notes view for a presentation last week. I posted about it here: https://vinayak.io/2020/08/24/day-11-reveal-keylogger-tmux-p...

Though I want to work on a terminal-based speaker notes view some time! https://github.com/vinayak-mehta/present/issues/5

i gotta say, every time i see a bay area python meetup on youtube, it's always super high quality. as someone who doesnt live in the bay area, i am very jealous. please pass along my compliments to organizers and i wish i could replicate it in my city.

Same, I'm not in the bay area and found this Youtube video from 2017 only 3 months ago. https://2019.northbaypython.org/ is an awesome conference that happens there every year.

I created a similar REPL presentation tool for Scala: https://github.com/marconilanna/REPLesent

REPLesent looks cool!

How did you do the matrix raining code in the demo? I did not see it in the examples. I use an mp4 of that as a screen saver but would love it in terminal instead!

Here is how to do it with a few lines of bash:

  function matrix () {
      echo -e "\e[1;40m"
      clear
      while :; do
          echo $LINES $COLUMNS $(( $RANDOM % $COLUMNS)) $(( $RANDOM % 72 ))
          sleep 0.05
      done|awk '{
          letters="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789あいうえおかきくけこさしすせそたちつてとなにぬねのはひふへほまみむめもやゆよらりるれろわをん@#$%^&*()";
          c=$4; letter=substr(letters,c,1);a[$3]=0;for (x in a) {o=a[x];a[x]=a[x]+1; printf "\033[%s;%sH\033[2;32m%s",o,x,letter;
          printf "\033[%s;%sH\033[1;37m%s\033[0;0H",a[x],x,letter;if (a[x] >= $1) { a[x]=0; } }
      }'
  }

You can use the matrix effect by adding `<!-- effect=matrix -->` to the top of your slide! :)

These effects are supported right now: fireworks, explosions, stars, matrix, plasma. I plan to add more asciimatics effects soon!

I'm hoping for <-- effect=gol --> for a Game of Life simulation. For whatever reason, it comes up in my talks often. It seems I exude geekness acme whenever I talk about hacking and self-propagating code.

That would be awesome! I'll work on it and add it some time! Opened https://github.com/vinayak-mehta/present/issues/45 to track it :D

You mean like this? https://github.com/abishekvashok/cmatrix

Relies on the asciimatics Matrix effect, looks like: https://github.com/peterbrittain/asciimatics/blob/master/asc...

Yes! `present` is built on asciimatics.

Hey! It's super cool, but can't work it out how to run this on a few environemnts. Tried Ubuntu and centos, always get ModuleNotFoundError: No module named 'dataclasses'.

Centos 8.2, Python 3.6.8, present Version: 0.4.0, pip 9.0.3. Tried with global and user install in pip. Not really a python dev, more of a user :)

I just found some issues on it on github, will try to sort it out, sorry for calling here first, just expected all dependencies to be there and didn't realized "dataclasses" could be a project name!:)

could i ask about more details on shipping this? what made you start working on it? how long did you work on it to an initial state? have you had any practical work-related side benefits of doing something like this, or is it pure hobby?

I started working on this at the Recurse Center two weeks ago.

As for practical work-related side benefits, I've neither had my open-source work weigh in on the hiring process (as everyone still asks algorithms/data structures questions) nor earned much money through it. But I love building open-source tools that would be useful for people, including me (I used `present` for a talk some days ago), so you could say it's just a hobby at this point.

oh wow, very nice! well congrats on shipping this and i'm sure the exercise will come in useful in unexpected ways!

Thanks! An unrelated question: how do you track HN comments? (since you replied to this one so quickly!)

i used to use a hn comment reply notification tool at my old job, but no this one i just happened to check my replies at the right time

I cant running this apps

  \appdata\local\programs\python\python38\lib\runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,

Can you raise an issue with some detail on how you installed it along with the full traceback? https://github.com/vinayak-mehta/present/issues Your OS, Python version and terminal emulator details will also help.

I'll take a look!

love it... thanks

Glad you liked it!