001.ipynb

{
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   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
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   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "WARNING:tensorflow:From D:\\ProgramFiles\\anaconda\\envs\\py37\\lib\\site-packages\\tensorflow_core\\python\\compat\\v2_compat.py:88: disable_resource_variables (from tensorflow.python.ops.variable_scope) is deprecated and will be removed in a future version.\n",
      "Instructions for updating:\n",
      "non-resource variables are not supported in the long term\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "'2.1.0'"
      ]
     },
     "execution_count": 1,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import tensorflow.compat.v1 as tf\n",
    "tf.disable_v2_behavior()\n",
    "\n",
    "tf.__version__"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "scrolled": true
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "b'Hello, TensorFlow!'\n"
     ]
    }
   ],
   "source": [
    "hello = tf.constant(\"Hello, TensorFlow!\")\n",
    "\n",
    "sess = tf.Session()\n",
    "\n",
    "print(sess.run(hello))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [],
   "source": [
    "node1 = tf.constant(3.0, tf.float32)\n",
    "node2 = tf.constant(4.0)\n",
    "node3 = tf.add(node1, node2)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "node1: Tensor(\"Const_1:0\", shape=(), dtype=float32) node2: Tensor(\"Const_2:0\", shape=(), dtype=float32)\n",
      "node3: Tensor(\"Add:0\", shape=(), dtype=float32)\n"
     ]
    }
   ],
   "source": [
    "print(\"node1:\", node1, \"node2:\", node2)\n",
    "print(\"node3:\",node3)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "sess.run(node1, node2): [3.0, 4.0]\n",
      "sess.run(node3): 7.0\n"
     ]
    }
   ],
   "source": [
    "sess = tf.Session()\n",
    "print(\"sess.run(node1, node2):\", sess.run([node1, node2]))\n",
    "print(\"sess.run(node3):\", sess.run(node3))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "7.5\n",
      "[3. 7.]\n"
     ]
    }
   ],
   "source": [
    "a = tf.placeholder(tf.float32)\n",
    "b = tf.placeholder(tf.float32)\n",
    "adder_node = a + b\n",
    "\n",
    "sess = tf.Session()\n",
    "\n",
    "print(sess.run(adder_node, feed_dict={a: 3, b: 4.5}))\n",
    "print(sess.run(adder_node, feed_dict={a: [1, 3], b: [2, 4]}))"
   ]
  }
 ],
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