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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 trace_integration(tracer=None):
 """Wrap the requests library to trace it."""

    log.info('Integrated module: {}'.format(MODULE_NAME))

    if tracer is not None:
        # The execution_context tracer should never be None - if it has not
        # been set it returns a no-op tracer. Most code in this library does
        # not handle None being used in the execution context.
        execution_context.set_opencensus_tracer(tracer)

    # Wrap the requests functions
    for func in REQUESTS_WRAP_METHODS:
        requests_func = getattr(requests, func)
        wrapped = wrap_requests(requests_func)
        setattr(requests, requests_func.__name__, wrapped)

    # Wrap Session class
    wrapt.wrap_function_wrapper(
        MODULE_NAME, 'Session.request', wrap_session_request)