Empty JSON Payloads Need Explicit None Checks to Avoid Wrong Request Methods

A Python request helper uses an identity check against None to decide whether a body is supplied, which also selects between GET and POST. Empty dictionaries, lists, False, and zero are falsey but still valid JSON values, so they take the serialization branch and produce POST requests. Replacing the check with a truthiness test would turn those cases into bodiless GET requests and could leave the method and body decisions inconsistent. The helper also cannot send a JSON null body, since passing None is interpreted as absence before serialization. The article recommends keeping the sentinel meaning explicit during refactoring and preserving which values remain expressible.