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<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
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<h1>Source code for torchreid.utils.loggers</h1><div class="highlight"><pre>
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<span></span><span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">absolute_import</span>
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<span class="n">__all__</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'Logger'</span><span class="p">,</span> <span class="s1">'RankLogger'</span><span class="p">]</span>
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<span class="kn">import</span> <span class="nn">sys</span>
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<span class="kn">import</span> <span class="nn">os</span>
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<span class="kn">import</span> <span class="nn">os.path</span> <span class="k">as</span> <span class="nn">osp</span>
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<span class="kn">from</span> <span class="nn">.tools</span> <span class="k">import</span> <span class="n">mkdir_if_missing</span>
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<div class="viewcode-block" id="Logger"><a class="viewcode-back" href="../../../pkg/utils.html#torchreid.utils.loggers.Logger">[docs]</a><span class="k">class</span> <span class="nc">Logger</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
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<span class="sd">"""Writes console output to external text file.</span>
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<span class="sd"> Imported from `<https://github.com/Cysu/open-reid/blob/master/reid/utils/logging.py>`_</span>
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<span class="sd"> Args:</span>
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<span class="sd"> fpath (str): directory to save logging file.</span>
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<span class="sd"> Examples::</span>
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<span class="sd"> >>> import sys</span>
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<span class="sd"> >>> import os</span>
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<span class="sd"> >>> import os.path as osp</span>
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<span class="sd"> >>> from torchreid.utils import Logger</span>
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<span class="sd"> >>> save_dir = 'log/resnet50-softmax-market1501'</span>
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<span class="sd"> >>> log_name = 'train.log'</span>
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<span class="sd"> >>> sys.stdout = Logger(osp.join(args.save_dir, log_name))</span>
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<span class="sd"> """</span>
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<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">fpath</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">console</span> <span class="o">=</span> <span class="n">sys</span><span class="o">.</span><span class="n">stdout</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">file</span> <span class="o">=</span> <span class="kc">None</span>
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<span class="k">if</span> <span class="n">fpath</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
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<span class="n">mkdir_if_missing</span><span class="p">(</span><span class="n">osp</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">fpath</span><span class="p">))</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">file</span> <span class="o">=</span> <span class="nb">open</span><span class="p">(</span><span class="n">fpath</span><span class="p">,</span> <span class="s1">'w'</span><span class="p">)</span>
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<span class="k">def</span> <span class="nf">__del__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
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<span class="k">def</span> <span class="nf">__enter__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
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<span class="k">pass</span>
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<span class="k">def</span> <span class="nf">__exit__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">):</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
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<span class="k">def</span> <span class="nf">write</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">msg</span><span class="p">):</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">console</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
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<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">file</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">file</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
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<span class="k">def</span> <span class="nf">flush</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">console</span><span class="o">.</span><span class="n">flush</span><span class="p">()</span>
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<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">file</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">file</span><span class="o">.</span><span class="n">flush</span><span class="p">()</span>
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<span class="n">os</span><span class="o">.</span><span class="n">fsync</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">file</span><span class="o">.</span><span class="n">fileno</span><span class="p">())</span>
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<span class="k">def</span> <span class="nf">close</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">console</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
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<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">file</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">file</span><span class="o">.</span><span class="n">close</span><span class="p">()</span></div>
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<div class="viewcode-block" id="RankLogger"><a class="viewcode-back" href="../../../pkg/utils.html#torchreid.utils.loggers.RankLogger">[docs]</a><span class="k">class</span> <span class="nc">RankLogger</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
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<span class="sd">"""Records the rank1 matching accuracy obtained for each</span>
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<span class="sd"> test dataset at specified evaluation steps and provides a function</span>
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<span class="sd"> to show the summarized results, which are convenient for analysis.</span>
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<span class="sd"> Args:</span>
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<span class="sd"> sources (str or list): source dataset name(s).</span>
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<span class="sd"> targets (str or list): target dataset name(s).</span>
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<span class="sd"> Examples::</span>
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<span class="sd"> >>> from torchreid.utils import RankLogger</span>
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<span class="sd"> >>> s = 'market1501'</span>
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<span class="sd"> >>> t = 'market1501'</span>
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<span class="sd"> >>> ranklogger = RankLogger(s, t)</span>
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<span class="sd"> >>> ranklogger.write(t, 10, 0.5)</span>
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<span class="sd"> >>> ranklogger.write(t, 20, 0.7)</span>
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<span class="sd"> >>> ranklogger.write(t, 30, 0.9)</span>
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<span class="sd"> >>> ranklogger.show_summary()</span>
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<span class="sd"> >>> # You will see:</span>
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<span class="sd"> >>> # => Show performance summary</span>
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<span class="sd"> >>> # market1501 (source)</span>
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<span class="sd"> >>> # - epoch 10 rank1 50.0%</span>
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<span class="sd"> >>> # - epoch 20 rank1 70.0%</span>
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<span class="sd"> >>> # - epoch 30 rank1 90.0%</span>
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<span class="sd"> >>> # If there are multiple test datasets</span>
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<span class="sd"> >>> t = ['market1501', 'dukemtmcreid']</span>
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<span class="sd"> >>> ranklogger = RankLogger(s, t)</span>
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<span class="sd"> >>> ranklogger.write(t[0], 10, 0.5)</span>
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<span class="sd"> >>> ranklogger.write(t[0], 20, 0.7)</span>
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<span class="sd"> >>> ranklogger.write(t[0], 30, 0.9)</span>
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<span class="sd"> >>> ranklogger.write(t[1], 10, 0.1)</span>
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<span class="sd"> >>> ranklogger.write(t[1], 20, 0.2)</span>
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<span class="sd"> >>> ranklogger.write(t[1], 30, 0.3)</span>
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<span class="sd"> >>> ranklogger.show_summary()</span>
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<span class="sd"> >>> # You can see:</span>
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<span class="sd"> >>> # => Show performance summary</span>
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<span class="sd"> >>> # market1501 (source)</span>
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<span class="sd"> >>> # - epoch 10 rank1 50.0%</span>
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<span class="sd"> >>> # - epoch 20 rank1 70.0%</span>
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<span class="sd"> >>> # - epoch 30 rank1 90.0%</span>
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<span class="sd"> >>> # dukemtmcreid (target)</span>
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<span class="sd"> >>> # - epoch 10 rank1 10.0%</span>
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<span class="sd"> >>> # - epoch 20 rank1 20.0%</span>
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<span class="sd"> >>> # - epoch 30 rank1 30.0%</span>
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<span class="sd"> """</span>
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<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sources</span><span class="p">,</span> <span class="n">targets</span><span class="p">):</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">sources</span> <span class="o">=</span> <span class="n">sources</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">targets</span> <span class="o">=</span> <span class="n">targets</span>
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<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="p">,</span> <span class="nb">str</span><span class="p">):</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">sources</span> <span class="o">=</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="p">]</span>
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<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">targets</span><span class="p">,</span> <span class="nb">str</span><span class="p">):</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">targets</span> <span class="o">=</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">targets</span><span class="p">]</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">logger</span> <span class="o">=</span> <span class="p">{</span><span class="n">name</span><span class="p">:</span> <span class="p">{</span><span class="s1">'epoch'</span><span class="p">:</span> <span class="p">[],</span> <span class="s1">'rank1'</span><span class="p">:</span> <span class="p">[]}</span> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">targets</span><span class="p">}</span>
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<div class="viewcode-block" id="RankLogger.write"><a class="viewcode-back" href="../../../pkg/utils.html#torchreid.utils.loggers.RankLogger.write">[docs]</a> <span class="k">def</span> <span class="nf">write</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">epoch</span><span class="p">,</span> <span class="n">rank1</span><span class="p">):</span>
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<span class="sd">"""Writes result.</span>
|
|
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|
<span class="sd"> Args:</span>
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<span class="sd"> name (str): dataset name.</span>
|
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<span class="sd"> epoch (int): current epoch.</span>
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<span class="sd"> rank1 (float): rank1 result.</span>
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<span class="sd"> """</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="p">[</span><span class="n">name</span><span class="p">][</span><span class="s1">'epoch'</span><span class="p">]</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">epoch</span><span class="p">)</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="p">[</span><span class="n">name</span><span class="p">][</span><span class="s1">'rank1'</span><span class="p">]</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">rank1</span><span class="p">)</span></div>
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<div class="viewcode-block" id="RankLogger.show_summary"><a class="viewcode-back" href="../../../pkg/utils.html#torchreid.utils.loggers.RankLogger.show_summary">[docs]</a> <span class="k">def</span> <span class="nf">show_summary</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
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<span class="sd">"""Shows saved results."""</span>
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<span class="nb">print</span><span class="p">(</span><span class="s1">'=> Show performance summary'</span><span class="p">)</span>
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<span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">targets</span><span class="p">:</span>
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<span class="n">from_where</span> <span class="o">=</span> <span class="s1">'source'</span> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span> <span class="k">else</span> <span class="s1">'target'</span>
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<span class="nb">print</span><span class="p">(</span><span class="s1">'</span><span class="si">{}</span><span class="s1"> (</span><span class="si">{}</span><span class="s1">)'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">from_where</span><span class="p">))</span>
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<span class="k">for</span> <span class="n">epoch</span><span class="p">,</span> <span class="n">rank1</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="p">[</span><span class="n">name</span><span class="p">][</span><span class="s1">'epoch'</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">logger</span><span class="p">[</span><span class="n">name</span><span class="p">][</span><span class="s1">'rank1'</span><span class="p">]):</span>
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<span class="nb">print</span><span class="p">(</span><span class="s1">'- epoch </span><span class="si">{}</span><span class="se">\t</span><span class="s1"> rank1 </span><span class="si">{:.1%}</span><span class="s1">'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">epoch</span><span class="p">,</span> <span class="n">rank1</span><span class="p">))</span></div></div>
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</pre></div>
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