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Python Requirements

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lukegordon333 edited this page Dec 5, 2025 · 9 revisions

Visum 2026 utilizes Python 3.13.

The base install of Visum 2026 comes with Python 3.13, but it may be missing packages required for the OR Metro model. To install the necessary packages on Windows, complete the following steps:

  1. Navigate to the Visum 2026 installation folder at "C:\Program Files\PTV Vision\PTV Visum 2026" and then further to "Exe\Python" (or similar, it depends on your machine configuration)

  2. Copy the full folder path pointing to the "Python" folder

  3. Open a "Command Prompt" as an Administrator (Check Administrator privileges for writing to the C drive. If required, contact your IT department). Search cmd in the main search bar, right-click "Command Prompt", and then click "Run as Administrator"

  4. Set the "Python" folder as the working directory. In the command prompt, type: cd [FOLDER PATH COPIED IN STEP 2]

  5. Disable your machine's default pip installer to use Visum's instead. Type in the command prompt: set PYTHONNOUSERSITE=1

  6. Check the pip installer being used. The result should be: pip XX.X from [Path to Python folder from Step 1]\Lib\site-packages\pip (python 3.13). Type in the command prompt: python -m pip --version

  7. To install a package, type in the command prompt: python -m pip install [Package to Install]

  8. Click Enter to install the package and repeat step 7 for all necessary packages

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