Open Source

I just released Eve v2.3.1. In the unlikely event that you’ve been using JSONP callbacks with Eve, you’ll want to update as this patch improves on their security (changelog).

A couple of days ago I released FatturaElettronica 4.0.6. It adds support for legacy windows-1252 encoding to both XML and P7M invoices, a long-standing annoyance that could previously be circumvented via external code. windows-1252 encoding in Italian e-invoices has been a persistent headache — it’s technically outside the FatturaPA spec (which mandates UTF-8), but it crops up often enough in real-world invoices from older or misconfigured billing systems that users kept running into it. The Invoicetronic stack has been updated accordingly. ...

Eve v2.3 was just released on PyPI. It adds optimize_pagination_for_speed, a resource-level setting that allows granular control, overriding the equivalent global option that goes by the same name. Many thanks to Emanuele Di Giacomo for contributing to the project.

Eve v2.2.5 was just released on PyPI. It brings the pagination fix discussed in a previous post. Many thanks to Calvin Smith per contributing to the project.

Yesterday a pull request came in proposing a fix for a small pagination bug in Eve, the REST API framework I maintain. The intervention is small, precise, and comes with a well-crafted test. Two things stood out: the PR is in draft, and it includes an AI disclosure: the fix and the test were created by Claude. I don’t have mongo available or all the necessary python versions for testing, so I’m making this a draft PR so that I can verify all the tests/checks pass before marking it as ready to review. ...

Eve v2.2.4 was just released on PyPI. It is a minor update, with a validation fix contributed by smeng9. See the changelog for details.

I just released FatturaElettronica.NET v4. The major version bump is due to a minor breaking change introduced with this version. After removing the BouncyCastle dependency (v3.4.16) for signature, content extraction, and encoding purposes, a few minor behavioral changes were introduced in the library. It was previously possible to extract content from documents with tampered signatures (if signature validation was flagged false) Signature exceptions were being misreported as Base64 FormatExceptions for non-base64 input files After a lengthy analysis and troubleshooting, it was determined that System.Cryptography (which now replaces BouncyCastle) cannot support the successful decoding of tampered invoices. However, this is undesirable as a feature in the first place. The result is a breaking change: attempting to read tampered documents will now invariably throw SignatureException. ...

Eve v2.2.1 was just released on PyPI. It is a minor upgrade, but it includes a remarkable performance increase contributed by Alexander Urieles. Also, thanks to Svante Bengtson and Pablo Parada for their help with this release.

I just released FatturaElettronica .NET v3.6.3. Since version 3.6.1, the project has added English to the list of supported languages. The latest release improves English support, aligning it with the official translation. Michael Mairegger contributed this improvement. The Fattura Elettronica open-source project allows for the validation and de/serialization of electronic invoices that adhere to the standard defined by the Italian Revenue Agency.

I presented at .NET Conf Rome 2025 yesterday, and it went very well, or at least that was my impression. I enjoyed myself, and the reception seemed great, from the organizers, the other speakers (most of whom are fellow MVPs), and the audience. But the kicker was just before the session when, at the coffee break, an attendant approached me to shake hands and tell me he had known me for a long time because he discovered and used Eve in a research project he was working on years ago. As I recall, he had attended one of my Eve sessions at EuroPython, maybe in Berlin in 2014. As is often the case, he had no immediate need for my project and shelved it as “interesting, and cool that it’s by an Italian author, but I don’t need really it”. Then, a couple of years later, in a time of need, he recalled that little presentation of mine, and, long story short, Eve ended up being adopted by a big, unnamed corp or research institute. I thanked him from the bottom of my heart and told him it was worth preparing for the talk, waking up at 4 am and travelling to Rome to meet him and hear his story. It’s moments like this that make it all worth it. Also, hearing such a Python story at a .NET event was unexpected. ...