
brunogirin
Python Testing with pytest, Second Edition: error when running tox in parallel (page 151)
When trying to run tox
in parallel as explained on page 151, I got the following error:
tox: error: argument -p/–parallel: expected one argument
I re-ran by using the following command: tox -c tox_multiple_Pythons.ini -p 4
assuming that the argument needed was the number of threads (although I am not sure my assumption is true). This is with tox 3.13.2, which is the default version on Ubuntu 20.04 LTS. It may have changed in newer versions. It would be good to highlight that this can happen and how to fix it.
First Post!

brianokken
Author of Python Testing with pytest
argument defaults to auto
So you shouldn’t have to pass in anything.
Might be a quirk of your env. though.
Glad you got it fixed.
Popular Pragmatic Bookshelf topics

Some minor things in the paper edition that says “3 2020” on the title page verso, not mentioned in the book’s errata online:
p. 186 But...
New

Hi Brian,
Looks like the api for tinydb has changed a little. Noticed while working on chapter 7 that the .purge() call to the db throws...
New

your book suggests to use Image.toByteData() to convert image to bytes, however I get the following error: "the getter ‘toByteData’ isn’t...
New

Hi! I know not the intentions behind this narrative when called, on page XI:
mount() |> handle_event() |> render()
but the correc...
New

Dear Sophie.
I tried to do the “Authorization” exercise and have two questions:
When trying to plug in an email-service, I found the ...
New

#book-python-testing-with-pytest-second-edition
Hi. Thanks for writing the book. I am just learning so this might just of been an issue ...
New

I ran this command after installing the sample application:
$ cards add do something --owner Brian
And got a file not found error:
Fil...
New

Title: Build a Weather Station with Elixir and Nerves: Problem connecting to Postgres with Grafana on (page 64)
If you follow the defau...
New

I’m a newbie to Rails 7 and have hit an issue with the bin/Dev script mentioned on pages 112-113.
Iteration A1 - Seeing the list of prod...
New

Hello faithful readers! If you have tried to follow along in the book, you are asked to start up the dev environment via dx/build and ar...
New
Other popular topics

A thread that every forum needs!
Simply post a link to a track on YouTube (or SoundCloud or Vimeo amongst others!) on a separate line an...
New

If it’s a mechanical keyboard, which switches do you have?
Would you recommend it? Why?
What will your next keyboard be?
Pics always w...
New

Curious to know which languages and frameworks you’re all thinking about learning next :upside_down_face:
Perhaps if there’s enough peop...
New

This looks like a stunning keycap set :orange_heart:
A LEGENDARY KEYBOARD LIVES ON
When you bought an Apple Macintosh computer in the e...
New

Not sure if following fits exactly this thread, or if we should have a hobby thread…
For many years I’m designing and building model air...
New

I am asking for any distro that only has the bare-bones to be able to get a shell in the server and then just install the packages as we ...
New

Author Spotlight
Dmitry Zinoviev
@aqsaqal
Today we’re putting our spotlight on Dmitry Zinoviev, author of Data Science Essentials in ...
New

Author Spotlight:
Tammy Coron
@Paradox927
Gaming, and writing games in particular, is about passion, vision, experience, and immersio...
New

Author Spotlight:
Sophie DeBenedetto
@SophieDeBenedetto
The days of the traditional request-response web application are long gone, b...
New

I’m able to do the “artistic” part of game-development; character designing/modeling, music, environment modeling, etc.
However, I don’t...
New
Categories:
Sub Categories:
Popular Portals
- /elixir
- /rust
- /wasm
- /ruby
- /erlang
- /phoenix
- /keyboards
- /rails
- /js
- /python
- /security
- /go
- /swift
- /vim
- /clojure
- /java
- /haskell
- /emacs
- /svelte
- /onivim
- /typescript
- /crystal
- /c-plus-plus
- /tailwind
- /kotlin
- /gleam
- /react
- /flutter
- /elm
- /ocaml
- /ash
- /vscode
- /opensuse
- /centos
- /php
- /deepseek
- /html
- /zig
- /scala
- /debian
- /nixos
- /lisp
- /sublime-text
- /textmate
- /agda
- /react-native
- /kubuntu
- /arch-linux
- /ubuntu
- /revery
- /spring
- /django
- /manjaro
- /diversity
- /lua
- /nodejs
- /julia
- /slackware
- /c
- /markdown