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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 home(request):
 """Try to connect to database, and list available examples."""

    try:
        DBSession.query(User).first()
    except DBAPIError:
        return Response(
            conn_err_msg,
            content_type="text/plain",
            status_int=500,
        )

    return {"project": "pyramid_tut"}