keras_input_models_vs_layers.ipynb

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    {
     "name": "stderr",
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     "text": [
      "Using Theano backend.\n"
     ]
    }
   ],
   "source": [
    "from ds_utils.imports import *"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 45,
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   "outputs": [
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     "data": {
      "text/plain": [
       "<function keras.engine.topology.Input>"
      ]
     },
     "execution_count": 45,
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   "source": [
    "keras.models.Input"
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   "cell_type": "code",
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       "<function keras.engine.topology.Input>"
      ]
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     "execution_count": 46,
     "metadata": {},
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   ],
   "source": [
    "keras.layers.Input"
   ]
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  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "How are these two pointing to the same funcction?"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 29,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "keras.models??"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 33,
   "metadata": {
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   },
   "outputs": [
    {
     "name": "stdout",
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     "text": [
      "from .engine.topology import Input\r\n"
     ]
    }
   ],
   "source": [
    "cat ../keras/keras/models.py | grep 'import Input'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 34,
   "metadata": {
    "collapsed": true
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   "outputs": [],
   "source": [
    "keras.models.Input??"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 35,
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     "text": [
      "def Input(shape=None, batch_shape=None,\r\n"
     ]
    }
   ],
   "source": [
    "cat ../keras/keras/engine/topology.py | grep 'def Input'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 40,
   "metadata": {
    "collapsed": true
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   "source": [
    "keras.layers??"
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   "cell_type": "code",
   "execution_count": 42,
   "metadata": {
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   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "from ..engine import Input\r\n"
     ]
    }
   ],
   "source": [
    "cat ../keras/keras/layers/__init__.py | grep 'import Input$'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 44,
   "metadata": {
    "collapsed": false
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   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "from .topology import Input\r\n"
     ]
    }
   ],
   "source": [
    "cat ../keras/keras/engine/__init__.py | grep 'import Input$'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 38,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "keras.layers.Input??"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 39,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "def Input(shape=None, batch_shape=None,\r\n"
     ]
    }
   ],
   "source": [
    "cat ../keras/keras/engine/topology.py | grep 'def Input'"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Ref: \n",
    "- https://keras.io/getting-started/functional-api-guide/#multi-input-and-multi-output-models"
   ]
  }
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