titus.util.untagUnion¶

titus.util.untagUnion(expr, unionTypes)[source]¶

Turn a tagged union datum into a bare Python object or pass-through if not a tagged union datum.

Parameters:	expr (anything) – tagged union, which may be of the form {"tag": value} or just value unionTypes (list of Pythonized JSON) – types allowed by this union in Pythonized JSON schemas
Return type:	anything
Returns:	{"tag": value} collapsed to value if tag names one of the unionTypes; otherwise, pass-through