pip install opentelemetry-api opentelemetry-sdk

python - <<'EOF'
from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import ConsoleSpanExporter, SimpleSpanProcessor

provider = TracerProvider()
provider.add_span_processor(SimpleSpanProcessor(ConsoleSpanExporter()))
trace.set_tracer_provider(provider)

tracer = trace.get_tracer("demo")

with tracer.start_as_current_span("http-request") as span:
    span.set_attribute("http.method", "GET")
    span.set_attribute("http.url", "/api/users")
    span.set_attribute("http.status_code", 200)
    print("Span created: http-request")

with tracer.start_as_current_span("db-query") as span:
    span.set_attribute("db.system", "postgresql")
    span.set_attribute("db.statement", "SELECT * FROM users LIMIT 10")
    print("Span created: db-query")
EOF