|
| 1 | +{ |
| 2 | + "cells": [ |
| 3 | + { |
| 4 | + "cell_type": "code", |
| 5 | + "execution_count": 10, |
| 6 | + "metadata": { |
| 7 | + "collapsed": false |
| 8 | + }, |
| 9 | + "outputs": [ |
| 10 | + { |
| 11 | + "name": "stdout", |
| 12 | + "output_type": "stream", |
| 13 | + "text": [ |
| 14 | + "Add : 44\n", |
| 15 | + "Subtract: 42\n", |
| 16 | + "Multiply: 126\n" |
| 17 | + ] |
| 18 | + } |
| 19 | + ], |
| 20 | + "source": [ |
| 21 | + "import tensorflow as tf\n", |
| 22 | + "\n", |
| 23 | + "with tf.Session() as sess:\n", |
| 24 | + " add = sess.run( tf.add(4, 40) )\n", |
| 25 | + " print( f'Add : {add}' )\n", |
| 26 | + " \n", |
| 27 | + " subtract = sess.run( tf.subtract(add, 2 ) )\n", |
| 28 | + " print( f'Subtract: {subtract}' )\n", |
| 29 | + " \n", |
| 30 | + " mult = sess.run( tf.multiply(subtract, 3) )\n", |
| 31 | + " print( f'Multiply: {mult}' )" |
| 32 | + ] |
| 33 | + }, |
| 34 | + { |
| 35 | + "cell_type": "markdown", |
| 36 | + "metadata": {}, |
| 37 | + "source": [ |
| 38 | + "## both side of the operation should be of the same type" |
| 39 | + ] |
| 40 | + }, |
| 41 | + { |
| 42 | + "cell_type": "code", |
| 43 | + "execution_count": 11, |
| 44 | + "metadata": { |
| 45 | + "collapsed": false |
| 46 | + }, |
| 47 | + "outputs": [ |
| 48 | + { |
| 49 | + "ename": "TypeError", |
| 50 | + "evalue": "Input 'y' of 'Mul' Op has type int32 that does not match type float32 of argument 'x'.", |
| 51 | + "output_type": "error", |
| 52 | + "traceback": [ |
| 53 | + "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m", |
| 54 | + "\u001b[0;31mValueError\u001b[0m Traceback (most recent call last)", |
| 55 | + "\u001b[0;32m/Users/darienmt/miniconda3/envs/IntroToTensorFlow/lib/python3.6/site-packages/tensorflow/python/framework/op_def_library.py\u001b[0m in \u001b[0;36mapply_op\u001b[0;34m(self, op_type_name, name, **keywords)\u001b[0m\n\u001b[1;32m 490\u001b[0m \u001b[0mas_ref\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0minput_arg\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mis_ref\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 491\u001b[0;31m preferred_dtype=default_dtype)\n\u001b[0m\u001b[1;32m 492\u001b[0m \u001b[0;32mexcept\u001b[0m \u001b[0mTypeError\u001b[0m \u001b[0;32mas\u001b[0m \u001b[0merr\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n", |
| 56 | + "\u001b[0;32m/Users/darienmt/miniconda3/envs/IntroToTensorFlow/lib/python3.6/site-packages/tensorflow/python/framework/ops.py\u001b[0m in \u001b[0;36minternal_convert_to_tensor\u001b[0;34m(value, dtype, name, as_ref, preferred_dtype)\u001b[0m\n\u001b[1;32m 715\u001b[0m \u001b[0;32mif\u001b[0m \u001b[0mret\u001b[0m \u001b[0;32mis\u001b[0m \u001b[0;32mNone\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 716\u001b[0;31m \u001b[0mret\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mconversion_func\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mvalue\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mdtype\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mdtype\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mname\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mname\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mas_ref\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mas_ref\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m 717\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n", |
| 57 | + "\u001b[0;32m/Users/darienmt/miniconda3/envs/IntroToTensorFlow/lib/python3.6/site-packages/tensorflow/python/framework/ops.py\u001b[0m in \u001b[0;36m_TensorTensorConversionFunction\u001b[0;34m(t, dtype, name, as_ref)\u001b[0m\n\u001b[1;32m 588\u001b[0m \u001b[0;34m\"Tensor conversion requested dtype %s for Tensor with dtype %s: %r\"\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 589\u001b[0;31m % (dtype.name, t.dtype.name, str(t)))\n\u001b[0m\u001b[1;32m 590\u001b[0m \u001b[0;32mreturn\u001b[0m \u001b[0mt\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n", |
| 58 | + "\u001b[0;31mValueError\u001b[0m: Tensor conversion requested dtype float32 for Tensor with dtype int32: 'Tensor(\"Const_1:0\", shape=(), dtype=int32)'", |
| 59 | + "\nDuring handling of the above exception, another exception occurred:\n", |
| 60 | + "\u001b[0;31mTypeError\u001b[0m Traceback (most recent call last)", |
| 61 | + "\u001b[0;32m<ipython-input-11-d43fc9661d0f>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m 3\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 4\u001b[0m \u001b[0;32mwith\u001b[0m \u001b[0mtf\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mSession\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m \u001b[0;32mas\u001b[0m \u001b[0msess\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 5\u001b[0;31m \u001b[0mbadOperation\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0msess\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mrun\u001b[0m\u001b[0;34m(\u001b[0m \u001b[0mtf\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mmultiply\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0my\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m 6\u001b[0m \u001b[0mprint\u001b[0m\u001b[0;34m(\u001b[0m \u001b[0;34m'Never here'\u001b[0m \u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n", |
| 62 | + "\u001b[0;32m/Users/darienmt/miniconda3/envs/IntroToTensorFlow/lib/python3.6/site-packages/tensorflow/python/ops/math_ops.py\u001b[0m in \u001b[0;36mmultiply\u001b[0;34m(x, y, name)\u001b[0m\n\u001b[1;32m 355\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 356\u001b[0m \u001b[0;32mdef\u001b[0m \u001b[0mmultiply\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0my\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mname\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;32mNone\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 357\u001b[0;31m \u001b[0;32mreturn\u001b[0m \u001b[0mgen_math_ops\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_mul\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0my\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mname\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m 358\u001b[0m \u001b[0mmultiply\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m__doc__\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mgen_math_ops\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_mul\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m__doc__\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mreplace\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"Mul\"\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m\"`tf.multiply`\"\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 359\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n", |
| 63 | + "\u001b[0;32m/Users/darienmt/miniconda3/envs/IntroToTensorFlow/lib/python3.6/site-packages/tensorflow/python/ops/gen_math_ops.py\u001b[0m in \u001b[0;36m_mul\u001b[0;34m(x, y, name)\u001b[0m\n\u001b[1;32m 1623\u001b[0m \u001b[0mA\u001b[0m\u001b[0;31m \u001b[0m\u001b[0;31m`\u001b[0m\u001b[0mTensor\u001b[0m\u001b[0;31m`\u001b[0m\u001b[0;34m.\u001b[0m \u001b[0mHas\u001b[0m \u001b[0mthe\u001b[0m \u001b[0msame\u001b[0m \u001b[0mtype\u001b[0m \u001b[0;32mas\u001b[0m\u001b[0;31m \u001b[0m\u001b[0;31m`\u001b[0m\u001b[0mx\u001b[0m\u001b[0;31m`\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 1624\u001b[0m \"\"\"\n\u001b[0;32m-> 1625\u001b[0;31m \u001b[0mresult\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0m_op_def_lib\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mapply_op\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"Mul\"\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mx\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0my\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0my\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mname\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mname\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m 1626\u001b[0m \u001b[0;32mreturn\u001b[0m \u001b[0mresult\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 1627\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n", |
| 64 | + "\u001b[0;32m/Users/darienmt/miniconda3/envs/IntroToTensorFlow/lib/python3.6/site-packages/tensorflow/python/framework/op_def_library.py\u001b[0m in \u001b[0;36mapply_op\u001b[0;34m(self, op_type_name, name, **keywords)\u001b[0m\n\u001b[1;32m 520\u001b[0m \u001b[0;34m\"%s type %s of argument '%s'.\"\u001b[0m \u001b[0;34m%\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 521\u001b[0m (prefix, dtypes.as_dtype(attrs[input_arg.type_attr]).name,\n\u001b[0;32m--> 522\u001b[0;31m inferred_from[input_arg.type_attr]))\n\u001b[0m\u001b[1;32m 523\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 524\u001b[0m \u001b[0mtypes\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0;34m[\u001b[0m\u001b[0mvalues\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mdtype\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n", |
| 65 | + "\u001b[0;31mTypeError\u001b[0m: Input 'y' of 'Mul' Op has type int32 that does not match type float32 of argument 'x'." |
| 66 | + ] |
| 67 | + } |
| 68 | + ], |
| 69 | + "source": [ |
| 70 | + "x = tf.constant(4.0)\n", |
| 71 | + "y = tf.constant(2)\n", |
| 72 | + "\n", |
| 73 | + "with tf.Session() as sess:\n", |
| 74 | + " badOperation = sess.run( tf.multiply(x, y))\n", |
| 75 | + " print( 'Never here' )" |
| 76 | + ] |
| 77 | + }, |
| 78 | + { |
| 79 | + "cell_type": "markdown", |
| 80 | + "metadata": {}, |
| 81 | + "source": [ |
| 82 | + "## cast operation should be applied" |
| 83 | + ] |
| 84 | + }, |
| 85 | + { |
| 86 | + "cell_type": "code", |
| 87 | + "execution_count": 12, |
| 88 | + "metadata": { |
| 89 | + "collapsed": false |
| 90 | + }, |
| 91 | + "outputs": [ |
| 92 | + { |
| 93 | + "name": "stdout", |
| 94 | + "output_type": "stream", |
| 95 | + "text": [ |
| 96 | + "Everything ok : 8 \n" |
| 97 | + ] |
| 98 | + } |
| 99 | + ], |
| 100 | + "source": [ |
| 101 | + "with tf.Session() as sess:\n", |
| 102 | + " notSobadOperation = sess.run( tf.multiply( tf.cast(x, tf.int32), y))\n", |
| 103 | + " print( f'Everything ok : {notSobadOperation} ' )" |
| 104 | + ] |
| 105 | + }, |
| 106 | + { |
| 107 | + "cell_type": "code", |
| 108 | + "execution_count": null, |
| 109 | + "metadata": { |
| 110 | + "collapsed": true |
| 111 | + }, |
| 112 | + "outputs": [], |
| 113 | + "source": [] |
| 114 | + } |
| 115 | + ], |
| 116 | + "metadata": { |
| 117 | + "kernelspec": { |
| 118 | + "display_name": "Python 3", |
| 119 | + "language": "python", |
| 120 | + "name": "python3" |
| 121 | + }, |
| 122 | + "language_info": { |
| 123 | + "codemirror_mode": { |
| 124 | + "name": "ipython", |
| 125 | + "version": 3 |
| 126 | + }, |
| 127 | + "file_extension": ".py", |
| 128 | + "mimetype": "text/x-python", |
| 129 | + "name": "python", |
| 130 | + "nbconvert_exporter": "python", |
| 131 | + "pygments_lexer": "ipython3", |
| 132 | + "version": "3.6.0" |
| 133 | + } |
| 134 | + }, |
| 135 | + "nbformat": 4, |
| 136 | + "nbformat_minor": 2 |
| 137 | +} |
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