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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def execute(func, handler, args, kwargs):
 """ Wrap the handler ``_execute`` method to trace incoming requests, extracting the context from the headers, if available. """

    tracing = handler.settings.get('opentracing_tracing')

    with tracer_stack_context():
        if tracing._trace_all:
            attrs = handler.settings.get('opentracing_traced_attributes', [])
            tracing._apply_tracing(handler, attrs)

        return func(*args, **kwargs)