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<title>Coverage for marvin_image_classification_engine/training/trainer.py: 90%</title>
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<h1>Coverage for <b>marvin_image_classification_engine/training/trainer.py</b> :
<span class="pc_cov">90%</span>
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50 statements &nbsp;
<span class="run hide_run shortkey_r button_toggle_run">45 run</span>
<span class="mis shortkey_m button_toggle_mis">5 missing</span>
<span class="exc shortkey_x button_toggle_exc">0 excluded</span>
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<p id="t1" class="pln"><span class="com">#!/usr/bin/env python</span><span class="strut">&nbsp;</span></p>
<p id="t2" class="pln"><span class="com"># coding=utf-8</span><span class="strut">&nbsp;</span></p>
<p id="t3" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t4" class="stm run hide_run"><span class="str">"""Trainer engine action.</span><span class="strut">&nbsp;</span></p>
<p id="t5" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t6" class="pln"><span class="str">Use this module to add the project main code.</span><span class="strut">&nbsp;</span></p>
<p id="t7" class="pln"><span class="str">"""</span><span class="strut">&nbsp;</span></p>
<p id="t8" class="stm run hide_run"><span class="key">import</span> <span class="nam">os</span><span class="strut">&nbsp;</span></p>
<p id="t9" class="stm run hide_run"><span class="key">import</span> <span class="nam">numpy</span> <span class="key">as</span> <span class="nam">np</span><span class="strut">&nbsp;</span></p>
<p id="t10" class="stm run hide_run"><span class="key">import</span> <span class="nam">cv2</span><span class="strut">&nbsp;</span></p>
<p id="t11" class="stm run hide_run"><span class="key">from</span> <span class="nam">keras</span><span class="op">.</span><span class="nam">layers</span> <span class="key">import</span> <span class="nam">Activation</span><span class="op">,</span> <span class="nam">Reshape</span><span class="op">,</span> <span class="nam">Dropout</span><span class="op">,</span> <span class="nam">Dense</span><span class="op">,</span> <span class="nam">Flatten</span><span class="strut">&nbsp;</span></p>
<p id="t12" class="stm run hide_run"><span class="key">from</span> <span class="nam">keras</span><span class="op">.</span><span class="nam">layers</span> <span class="key">import</span> <span class="nam">AtrousConvolution2D</span><span class="op">,</span> <span class="nam">Conv2D</span><span class="op">,</span> <span class="nam">MaxPooling2D</span><span class="op">,</span> <span class="nam">Conv2DTranspose</span><span class="op">,</span> <span class="nam">UpSampling2D</span><span class="strut">&nbsp;</span></p>
<p id="t13" class="stm run hide_run"><span class="key">from</span> <span class="nam">keras</span><span class="op">.</span><span class="nam">models</span> <span class="key">import</span> <span class="nam">Sequential</span><span class="strut">&nbsp;</span></p>
<p id="t14" class="stm run hide_run"><span class="key">from</span> <span class="nam">keras</span> <span class="key">import</span> <span class="nam">callbacks</span><span class="op">,</span> <span class="nam">optimizers</span><span class="strut">&nbsp;</span></p>
<p id="t15" class="stm run hide_run"><span class="key">from</span> <span class="op">.</span><span class="op">.</span><span class="nam">model_serializer</span> <span class="key">import</span> <span class="nam">ModelSerializer</span><span class="strut">&nbsp;</span></p>
<p id="t16" class="stm run hide_run"><span class="key">from</span> <span class="op">.</span><span class="op">.</span><span class="nam">_compatibility</span> <span class="key">import</span> <span class="nam">six</span><span class="strut">&nbsp;</span></p>
<p id="t17" class="stm run hide_run"><span class="key">from</span> <span class="op">.</span><span class="op">.</span><span class="nam">_logging</span> <span class="key">import</span> <span class="nam">get_logger</span><span class="strut">&nbsp;</span></p>
<p id="t18" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t19" class="stm run hide_run"><span class="key">from</span> <span class="nam">marvin_python_toolbox</span><span class="op">.</span><span class="nam">engine_base</span> <span class="key">import</span> <span class="nam">EngineBaseTraining</span><span class="strut">&nbsp;</span></p>
<p id="t20" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t21" class="stm run hide_run"><span class="nam">__all__</span> <span class="op">=</span> <span class="op">[</span><span class="str">'Trainer'</span><span class="op">]</span><span class="strut">&nbsp;</span></p>
<p id="t22" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t23" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t24" class="stm run hide_run"><span class="nam">logger</span> <span class="op">=</span> <span class="nam">get_logger</span><span class="op">(</span><span class="str">'trainer'</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t25" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t26" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t27" class="stm run hide_run"><span class="key">class</span> <span class="nam">Trainer</span><span class="op">(</span><span class="nam">ModelSerializer</span><span class="op">,</span> <span class="nam">EngineBaseTraining</span><span class="op">)</span><span class="op">:</span><span class="strut">&nbsp;</span></p>
<p id="t28" class="stm run hide_run"> <span class="key">def</span> <span class="nam">__init__</span><span class="op">(</span><span class="nam">self</span><span class="op">,</span> <span class="op">**</span><span class="nam">kwargs</span><span class="op">)</span><span class="op">:</span><span class="strut">&nbsp;</span></p>
<p id="t29" class="stm run hide_run"> <span class="nam">super</span><span class="op">(</span><span class="nam">Trainer</span><span class="op">,</span> <span class="nam">self</span><span class="op">)</span><span class="op">.</span><span class="nam">__init__</span><span class="op">(</span><span class="op">**</span><span class="nam">kwargs</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t30" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t31" class="stm run hide_run"> <span class="key">def</span> <span class="nam">build_model</span><span class="op">(</span><span class="nam">self</span><span class="op">,</span> <span class="nam">w</span><span class="op">=</span><span class="num">150</span><span class="op">,</span> <span class="nam">h</span><span class="op">=</span><span class="num">150</span><span class="op">,</span> <span class="nam">trainable</span><span class="op">=</span><span class="nam">True</span><span class="op">)</span><span class="op">:</span><span class="strut">&nbsp;</span></p>
<p id="t32" class="stm run hide_run"> <span class="nam">model</span> <span class="op">=</span> <span class="nam">Sequential</span><span class="op">(</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t33" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">add</span><span class="op">(</span><span class="nam">Conv2D</span><span class="op">(</span><span class="num">32</span><span class="op">,</span> <span class="op">(</span><span class="num">3</span><span class="op">,</span> <span class="num">3</span><span class="op">)</span><span class="op">,</span> <span class="nam">input_shape</span><span class="op">=</span><span class="op">(</span><span class="nam">w</span><span class="op">,</span> <span class="nam">h</span><span class="op">,</span> <span class="num">3</span><span class="op">)</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t34" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">add</span><span class="op">(</span><span class="nam">Activation</span><span class="op">(</span><span class="str">'relu'</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t35" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">add</span><span class="op">(</span><span class="nam">MaxPooling2D</span><span class="op">(</span><span class="nam">pool_size</span><span class="op">=</span><span class="op">(</span><span class="num">2</span><span class="op">,</span> <span class="num">2</span><span class="op">)</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t36" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t37" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">add</span><span class="op">(</span><span class="nam">Conv2D</span><span class="op">(</span><span class="num">32</span><span class="op">,</span> <span class="op">(</span><span class="num">3</span><span class="op">,</span> <span class="num">3</span><span class="op">)</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t38" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">add</span><span class="op">(</span><span class="nam">Activation</span><span class="op">(</span><span class="str">'relu'</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t39" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">add</span><span class="op">(</span><span class="nam">MaxPooling2D</span><span class="op">(</span><span class="nam">pool_size</span><span class="op">=</span><span class="op">(</span><span class="num">2</span><span class="op">,</span> <span class="num">2</span><span class="op">)</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t40" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t41" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">add</span><span class="op">(</span><span class="nam">Conv2D</span><span class="op">(</span><span class="num">64</span><span class="op">,</span> <span class="op">(</span><span class="num">3</span><span class="op">,</span> <span class="num">3</span><span class="op">)</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t42" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">add</span><span class="op">(</span><span class="nam">Activation</span><span class="op">(</span><span class="str">'relu'</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t43" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">add</span><span class="op">(</span><span class="nam">MaxPooling2D</span><span class="op">(</span><span class="nam">pool_size</span><span class="op">=</span><span class="op">(</span><span class="num">2</span><span class="op">,</span> <span class="num">2</span><span class="op">)</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t44" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t45" class="stm run hide_run"> <span class="key">if</span> <span class="nam">trainable</span><span class="op">:</span><span class="strut">&nbsp;</span></p>
<p id="t46" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">add</span><span class="op">(</span><span class="nam">Flatten</span><span class="op">(</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t47" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">add</span><span class="op">(</span><span class="nam">Dense</span><span class="op">(</span><span class="num">64</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t48" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">add</span><span class="op">(</span><span class="nam">Activation</span><span class="op">(</span><span class="str">'relu'</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t49" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">add</span><span class="op">(</span><span class="nam">Dropout</span><span class="op">(</span><span class="num">0.5</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t50" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">add</span><span class="op">(</span><span class="nam">Dense</span><span class="op">(</span><span class="num">1</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t51" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">add</span><span class="op">(</span><span class="nam">Activation</span><span class="op">(</span><span class="str">'softmax'</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t52" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t53" class="stm run hide_run"> <span class="key">print</span><span class="op">(</span><span class="nam">model</span><span class="op">.</span><span class="nam">summary</span><span class="op">(</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t54" class="stm run hide_run"> <span class="key">return</span> <span class="nam">model</span><span class="strut">&nbsp;</span></p>
<p id="t55" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t56" class="stm run hide_run"> <span class="key">def</span> <span class="nam">generate_samples</span><span class="op">(</span><span class="nam">self</span><span class="op">,</span> <span class="nam">fnames</span><span class="op">)</span><span class="op">:</span><span class="strut">&nbsp;</span></p>
<p id="t57" class="stm mis"> <span class="key">while</span> <span class="nam">True</span><span class="op">:</span><span class="strut">&nbsp;</span></p>
<p id="t58" class="stm mis"> <span class="key">for</span> <span class="nam">fname</span><span class="op">,</span> <span class="nam">label</span> <span class="key">in</span> <span class="nam">fnames</span><span class="op">:</span><span class="strut">&nbsp;</span></p>
<p id="t59" class="stm mis"> <span class="nam">image</span> <span class="op">=</span> <span class="nam">cv2</span><span class="op">.</span><span class="nam">imread</span><span class="op">(</span><span class="nam">fname</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t60" class="stm mis"> <span class="nam">image</span> <span class="op">=</span> <span class="nam">image</span><span class="op">[</span><span class="nam">np</span><span class="op">.</span><span class="nam">newaxis</span><span class="op">,</span> <span class="op">:</span><span class="op">,</span> <span class="op">:</span><span class="op">,</span> <span class="op">(</span><span class="num">2</span><span class="op">,</span> <span class="num">1</span><span class="op">,</span> <span class="num">0</span><span class="op">)</span><span class="op">]</span><span class="strut">&nbsp;</span></p>
<p id="t61" class="stm mis"> <span class="key">yield</span> <span class="op">(</span><span class="nam">image</span><span class="op">,</span> <span class="nam">np</span><span class="op">.</span><span class="nam">array</span><span class="op">(</span><span class="op">[</span><span class="nam">int</span><span class="op">(</span><span class="nam">label</span><span class="op">)</span><span class="op">]</span><span class="op">)</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t62" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t63" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t64" class="stm run hide_run"> <span class="key">def</span> <span class="nam">execute</span><span class="op">(</span><span class="nam">self</span><span class="op">,</span> <span class="nam">params</span><span class="op">,</span> <span class="op">**</span><span class="nam">kwargs</span><span class="op">)</span><span class="op">:</span><span class="strut">&nbsp;</span></p>
<p id="t65" class="stm run hide_run"> <span class="nam">model</span> <span class="op">=</span> <span class="nam">self</span><span class="op">.</span><span class="nam">build_model</span><span class="op">(</span><span class="nam">trainable</span><span class="op">=</span><span class="nam">True</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t66" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">compile</span><span class="op">(</span><span class="nam">loss</span><span class="op">=</span><span class="str">'binary_crossentropy'</span><span class="op">,</span><span class="strut">&nbsp;</span></p>
<p id="t67" class="pln"> <span class="nam">optimizer</span><span class="op">=</span><span class="nam">optimizers</span><span class="op">.</span><span class="nam">SGD</span><span class="op">(</span><span class="nam">lr</span><span class="op">=</span><span class="nam">params</span><span class="op">[</span><span class="str">'LEARNING_RATE'</span><span class="op">]</span><span class="op">,</span> <span class="nam">momentum</span><span class="op">=</span><span class="nam">params</span><span class="op">[</span><span class="str">'MOMENTUM'</span><span class="op">]</span><span class="op">)</span><span class="op">,</span><span class="strut">&nbsp;</span></p>
<p id="t68" class="pln"> <span class="nam">metrics</span><span class="op">=</span><span class="op">[</span><span class="str">'accuracy'</span><span class="op">]</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t69" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t70" class="stm run hide_run"> <span class="nam">training_data</span> <span class="op">=</span> <span class="nam">self</span><span class="op">.</span><span class="nam">generate_samples</span><span class="op">(</span><span class="nam">self</span><span class="op">.</span><span class="nam">marvin_dataset</span><span class="op">[</span><span class="str">'train'</span><span class="op">]</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t71" class="stm run hide_run"> <span class="nam">validation_data</span> <span class="op">=</span> <span class="nam">self</span><span class="op">.</span><span class="nam">generate_samples</span><span class="op">(</span><span class="nam">self</span><span class="op">.</span><span class="nam">marvin_dataset</span><span class="op">[</span><span class="str">'val'</span><span class="op">]</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t72" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t73" class="stm run hide_run"> <span class="nam">model</span><span class="op">.</span><span class="nam">fit_generator</span><span class="op">(</span><span class="nam">training_data</span><span class="op">,</span><span class="strut">&nbsp;</span></p>
<p id="t74" class="pln"> <span class="nam">steps_per_epoch</span><span class="op">=</span><span class="nam">params</span><span class="op">[</span><span class="str">'STEPS'</span><span class="op">]</span><span class="op">,</span><span class="strut">&nbsp;</span></p>
<p id="t75" class="pln"> <span class="nam">epochs</span><span class="op">=</span><span class="nam">params</span><span class="op">[</span><span class="str">'EPOCHS'</span><span class="op">]</span><span class="op">,</span><span class="strut">&nbsp;</span></p>
<p id="t76" class="pln"> <span class="nam">validation_data</span><span class="op">=</span><span class="nam">validation_data</span><span class="op">,</span><span class="strut">&nbsp;</span></p>
<p id="t77" class="pln"> <span class="nam">validation_steps</span><span class="op">=</span><span class="nam">params</span><span class="op">[</span><span class="str">'VAL_STEPS'</span><span class="op">]</span><span class="op">)</span><span class="strut">&nbsp;</span></p>
<p id="t78" class="pln"><span class="strut">&nbsp;</span></p>
<p id="t79" class="stm run hide_run"> <span class="nam">self</span><span class="op">.</span><span class="nam">marvin_model</span> <span class="op">=</span> <span class="nam">model</span><span class="strut">&nbsp;</span></p>
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