psychopy command not found

In this troubleshooting guide we learn how to fix psychopy command not found error message

Introduction

When you run more command in linux terminal / console, you get the following error message

psychopy: command not found

or when using sudo you get the following error message

sudo: psychopy: command not found

Solutions to psychopy: command not found

How To Fix psychopy: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu psychopy is provided by psychopy package.

psychopy is:

PsychoPy provides an environment for creating psychology stimuli using Python scripting language. It combines the graphical strengths of OpenGL with easy Python syntax to give psychophysics a free and simple stimulus presentation and control package.

The goal is to provide, for the busy scientist, tools to control timing and windowing and a simple set of pre-packaged stimuli and methods. PsychoPy features

  • IDE GUI for coding in a powerful scripting language (Python)
  • Builder GUI for rapid development of stimulation sequences
  • Use of hardware-accelerated graphics (OpenGL)
  • Integration with Spectrascan PR650 for easy monitor calibration
  • Simple routines for staircase and constant stimuli experimental methods as well as curve-fitting and bootstrapping
  • Simple (or complex) GUIs via wxPython
  • Easy interfaces to joysticks, mice, sound cards etc. via PyGame
  • Video playback (MPG, DivX, AVI, QuickTime, etc.) as stimuli

To fix this problem, we can install more using the command below.

sudo apt-get -y install psychopy

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install psychopy.

sudo apt -y install psychopy

Or if you have aptitude installed you can use the following command.

sudo aptitude install psychopy

Summary

In this tutorial we learn how to fix psychopy command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.