before this got me going.
endpoint = "http://0.0.0.0:6006/v1/traces"
trace_provider = TracerProvider()
trace_provider.add_span_processor(SimpleSpanProcessor(OTLPSpanExporter(endpoint)))
# Set as global provider
trace.set_tracer_provider(trace_provider)
now, being not an app but pypackage, forbids me.