Apply a liCense to GroupDoCs.Viewer for Python via .NET — from file, from stream, via environment variable, or with a metered key....Prompt) set GROUPDOCS_LIC_PATH "C:\path\to\your\license\file.lic"...(Powershell) $env:GROUPDOCS_LIC_PATH="C:\path\to\your\license\file.lic"...