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KHIMKI, Russia, October 4, 2026 — Levitsky Concept has made a small Python example for checking booking intervals available for download. The downloadable ZIP archive accompanies a technical article explaining why reservation boundaries and preparation time need explicit rules.The resource illustrates a common scheduling question: whether a proposed reservation conflicts with an existing interval. It treats intervals as half-open, so a reservation ending at a boundary can be followed by another starting at that boundary when no preparation buffer is required. A separate preparation interval demonstrates how cleaning or handover time changes that decision.
The verification script contains 16 cases. They include adjacent intervals, partial overlaps, one reservation containing another, identical intervals, a gap between reservations, preparation-time boundaries, equivalent timezone offsets, ordering during a daylight-saving transition, and rejected empty or reversed intervals. All 16 cases passed when the published example was checked. This verifies those example cases; it does not establish the reliability of a production booking system.
The example requires Python 3.9 or later and an IANA timezone database. Its instructions explain how to install timezone data if the operating environment cannot resolve the demonstrated Europe/Berlin zone. Users can unpack the archive and run the supplied verification script, which records the results in a local JSON file. The code does not connect to a network or database and does not modify a working CRM.
One limitation is made explicit in the accompanying material: checking intervals alone does not prevent two simultaneous writes from creating conflicting reservations. Database constraints, synchronization and the operating timezone of each location must be designed separately. The article includes an illustrative database discussion, rather than a claim that a database integration has been implemented or tested in the downloadable example.
The resource was prepared with AI assistance and checked by executing its verification scenarios. It is educational material from Levitsky Concept, not a disclosure of how Auto555 or another production product is internally implemented. Developers can use the scenarios to discuss scheduling requirements and add checks appropriate to their own applications.
Levitsky Concept develops websites and CRM systems and provides related technical services. The example and article are available without a product registration. Company information is available on the Levitsky Concept website, and the accompanying technical article is published on its Mataroa blog.