Resolving "Label Studio not recognized" Command Error after Installation

Label Studio Support
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Question:

A user is encountering a problem when trying to launch Label Studio after installing it via pip install -U label-studio in Visual Studio Code. Here’s the problem they’re facing:

I installed Label Studio using pip install -U label-studio on VS Code but am unable to launch it. The error I get is: label-studio : The term 'label-studio' is not recognized as the name of a cmdlet, function, script file, or operable program. Any suggestions on how to fix this?

Answer:

The error you’re experiencing indicates that the command line does not recognize the ‘label-studio’ command; this likely means that the installation directory for Python scripts is not in your system’s PATH environment variable. Here are some steps to resolve the issue:

  1. Verify that Python and pip are correctly installed and are accessible from your command line. You can do this by running python --version and pip --version.

  2. If Python and pip work correctly, then locate the Scripts directory in your Python installation. Usually, it’s in a path like C:\Users\YourUsername\AppData\Local\Programs\Python\PythonXX\Scripts, where “PythonXX” is the version of Python you have installed.

  3. Add the Scripts directory to your PATH environment variable:

On Windows, you can do this by searching for “Environment Variables” in your start menu, then choosing “Edit the system environment variables”. Click “Environment Variables”, select “Path” under “System variables”, and click “Edit”. Click “New” and enter the full path to your Scripts directory. After adding it, click OK to close all dialog windows and apply the changes.

  1. Restart your Visual Studio Code or command line session to ensure the updated PATH variable is used.

  2. Try running the Label Studio command again: label-studio start.

If following these steps doesn’t resolve the issue, it might be worthwhile to check if multiple Python installations are conflicting or if there’s a virtual environment that needs to be activated.