{"library":"opentelemetry-propagator-b3","title":"OpenTelemetry B3 Propagator","description":"The `opentelemetry-propagator-b3` library provides B3 context propagation for OpenTelemetry Python, enabling distributed tracing across systems that use the B3 header format (e.g., Zipkin). It is part of the broader OpenTelemetry Python project, which follows a rapid release cycle, with new versions typically released monthly.","language":"python","status":"active","last_verified":"Wed May 13","install":{"commands":["pip install opentelemetry-propagator-b3 opentelemetry-sdk"],"cli":null},"imports":["from opentelemetry.propagators.b3 import B3Propagator","from opentelemetry.propagate import set_global_textmap"],"auth":{"required":false,"env_vars":[]},"quickstart":{"code":"import os\nfrom opentelemetry import trace\nfrom opentelemetry.propagate import set_global_textmap, get_global_textmap\nfrom opentelemetry.propagators.b3 import B3Propagator\nfrom opentelemetry.sdk.trace import TracerProvider\nfrom opentelemetry.sdk.trace.export import ConsoleSpanExporter, SimpleSpanProcessor\n\n# Set the B3 propagator globally\nset_global_textmap(B3Propagator())\n\n# Configure a basic tracer provider for demonstration\nprovider = TracerProvider()\nprocessor = SimpleSpanProcessor(ConsoleSpanExporter())\nprovider.add_span_processor(processor)\ntrace.set_tracer_provider(provider)\n\ntracer = trace.get_tracer(__name__)\n\ndef make_request():\n    carrier = {}\n    propagator = get_global_textmap()\n    # Inject context into a carrier (e.g., HTTP headers)\n    propagator.inject(carrier=carrier)\n    print(f\"Injected B3 headers: {carrier}\")\n\n    # Simulate receiving context in another service\n    # Here, we just extract from the same carrier for simplicity\n    ctx = propagator.extract(carrier=carrier)\n\n    with tracer.start_as_current_span(\"my-b3-propagated-span\", context=ctx):\n        print(\"Span created with propagated B3 context\")\n\nif __name__ == \"__main__\":\n    make_request()\n","lang":"python","description":"This quickstart demonstrates how to set the B3 propagator globally and use it to inject trace context into a carrier (like HTTP headers) and then extract it. This is crucial for distributed tracing where context needs to be passed between services. The `opentelemetry-sdk` is used here for a runnable example, but in a real application, you would configure exporters and resource detectors appropriately.","tag":null,"tag_description":null,"last_tested":"2026-04-25","results":[{"runtime":"python:3.10-alpine","exit_code":1},{"runtime":"python:3.10-slim","exit_code":1},{"runtime":"python:3.11-alpine","exit_code":1},{"runtime":"python:3.11-slim","exit_code":1},{"runtime":"python:3.12-alpine","exit_code":1},{"runtime":"python:3.12-slim","exit_code":1},{"runtime":"python:3.13-alpine","exit_code":1},{"runtime":"python:3.13-slim","exit_code":1},{"runtime":"python:3.9-alpine","exit_code":1},{"runtime":"python:3.9-slim","exit_code":1}]},"compatibility":{"tag":null,"tag_description":null,"last_tested":"2026-05-13","installed_version":"1.41.1","pypi_latest":"1.41.1","is_stale":false,"summary":{"python_range":"3.10–3.9","success_rate":50,"avg_install_s":2.1,"avg_import_s":null,"wheel_type":"wheel"},"results":[{"runtime":"python:3.10-alpine","python_version":"3.10","os_libc":"alpine 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