Python client for Factur-X e-invoices: create Factur-X PDF/A-3 from EN 16931 data, validate (including the French BR-FR rules), embed and extract, via the InvoiceXML API.
Python client for ZUGFeRD and XRechnung e-invoices: create ZUGFeRD PDF/A-3 and XRechnung XML from EN 16931 data, validate, embed, render and extract, via the InvoiceXML API.
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