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<a href="pypat-module.html">Package pypat</a> ::
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<a href="pypat.creational-module.html">Package creational</a> ::
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Module factory
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<h1 class="epydoc">Source Code for <a href="pypat.creational.factory-module.html">Module pypat.creational.factory</a></h1>
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<pre class="py-src">
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<a name="L1"></a><tt class="py-lineno"> 1</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">abc</tt> <tt class="py-keyword">import</tt> <tt class="py-name">abstractmethod</tt><tt class="py-op">,</tt> <tt class="py-name">ABCMeta</tt> </tt>
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<a name="Factory"></a><div id="Factory-def"><a name="L2"></a><tt class="py-lineno"> 2</tt> <tt class="py-line"> </tt>
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<a name="L3"></a><tt class="py-lineno"> 3</tt> <tt class="py-line"> </tt>
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<a name="L4"></a><tt class="py-lineno"> 4</tt> <a class="py-toggle" href="#" id="Factory-toggle" onclick="return toggle('Factory');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="pypat.creational.factory.Factory-class.html">Factory</a><tt class="py-op">(</tt><tt class="py-base-class">object</tt><tt class="py-op">,</tt> <tt class="py-base-class">metaclass</tt><tt class="py-op">=</tt><tt class="py-base-class">ABCMeta</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
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</div><div id="Factory-collapsed" style="display:none;" pad="++" indent="++++"></div><div id="Factory-expanded"><a name="L5"></a><tt class="py-lineno"> 5</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
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<a name="L6"></a><tt class="py-lineno"> 6</tt> <tt class="py-line"><tt class="py-docstring"> Factory Interface.</tt> </tt>
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<a name="L7"></a><tt class="py-lineno"> 7</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
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<a name="L8"></a><tt class="py-lineno"> 8</tt> <tt class="py-line"><tt class="py-docstring"> All Factories should inherit this class and overwrite the create method.</tt> </tt>
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<a name="L9"></a><tt class="py-lineno"> 9</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
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<a name="L10"></a><tt class="py-lineno">10</tt> <tt class="py-line"><tt class="py-docstring"> - External Usage documentation: U{https://github.com/tylerlaberge/PyPatterns/wiki/Creational-Pattern-Usage}</tt> </tt>
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<a name="L11"></a><tt class="py-lineno">11</tt> <tt class="py-line"><tt class="py-docstring"> - External Factory Pattern documentation: U{https://en.wikipedia.org/wiki/Factory_method_pattern}</tt> </tt>
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<a name="L12"></a><tt class="py-lineno">12</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
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<a name="L13"></a><tt class="py-lineno">13</tt> <tt class="py-line"> <tt class="py-decorator">@</tt><tt class="py-decorator">abstractmethod</tt> </tt>
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<a name="Factory.create"></a><div id="Factory.create-def"><a name="L14"></a><tt class="py-lineno">14</tt> <a class="py-toggle" href="#" id="Factory.create-toggle" onclick="return toggle('Factory.create');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pypat.creational.factory.Factory-class.html#create">create</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-op">**</tt><tt class="py-param">kwargs</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
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</div><div id="Factory.create-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="Factory.create-expanded"><a name="L15"></a><tt class="py-lineno">15</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
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<a name="L16"></a><tt class="py-lineno">16</tt> <tt class="py-line"><tt class="py-docstring"> Abstract create method.</tt> </tt>
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<a name="L17"></a><tt class="py-lineno">17</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
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<a name="L18"></a><tt class="py-lineno">18</tt> <tt class="py-line"><tt class="py-docstring"> Concrete implementations should return a new instance of the object the factory class is responsible for.</tt> </tt>
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<a name="L19"></a><tt class="py-lineno">19</tt> <tt class="py-line"><tt class="py-docstring"> @param kwargs: Arguments for object creation.</tt> </tt>
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<a name="L20"></a><tt class="py-lineno">20</tt> <tt class="py-line"><tt class="py-docstring"> @return: A new instance of the object the factory is responsible for.</tt> </tt>
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<a name="L21"></a><tt class="py-lineno">21</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
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<a name="L22"></a><tt class="py-lineno">22</tt> <tt class="py-line"> <tt class="py-keyword">pass</tt> </tt>
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</div></div><a name="L23"></a><tt class="py-lineno">23</tt> <tt class="py-line"> </tt>
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<a name="AbstractFactory"></a><div id="AbstractFactory-def"><a name="L24"></a><tt class="py-lineno">24</tt> <tt class="py-line"> </tt>
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<a name="L25"></a><tt class="py-lineno">25</tt> <a class="py-toggle" href="#" id="AbstractFactory-toggle" onclick="return toggle('AbstractFactory');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="pypat.creational.factory.AbstractFactory-class.html">AbstractFactory</a><tt class="py-op">(</tt><tt class="py-base-class">Factory</tt><tt class="py-op">,</tt> <tt class="py-base-class">metaclass</tt><tt class="py-op">=</tt><tt class="py-base-class">ABCMeta</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
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</div><div id="AbstractFactory-collapsed" style="display:none;" pad="++" indent="++++"></div><div id="AbstractFactory-expanded"><a name="L26"></a><tt class="py-lineno">26</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
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<a name="L27"></a><tt class="py-lineno">27</tt> <tt class="py-line"><tt class="py-docstring"> Abstract Factory Class as part of the AbstractFactory design pattern.</tt> </tt>
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<a name="L28"></a><tt class="py-lineno">28</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
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<a name="L29"></a><tt class="py-lineno">29</tt> <tt class="py-line"><tt class="py-docstring"> - External Usage documentation: U{https://github.com/tylerlaberge/PyPatterns/wiki/Creational-Pattern-Usage}</tt> </tt>
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<a name="L30"></a><tt class="py-lineno">30</tt> <tt class="py-line"><tt class="py-docstring"> - External Abstract Factory Pattern documentation: U{https://en.wikipedia.org/wiki/Abstract_factory_pattern}</tt> </tt>
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<a name="L31"></a><tt class="py-lineno">31</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
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<a name="AbstractFactory.__init__"></a><div id="AbstractFactory.__init__-def"><a name="L32"></a><tt class="py-lineno">32</tt> <a class="py-toggle" href="#" id="AbstractFactory.__init__-toggle" onclick="return toggle('AbstractFactory.__init__');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pypat.creational.factory.AbstractFactory-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
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</div><div id="AbstractFactory.__init__-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="AbstractFactory.__init__-expanded"><a name="L33"></a><tt class="py-lineno">33</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
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<a name="L34"></a><tt class="py-lineno">34</tt> <tt class="py-line"><tt class="py-docstring"> Initialize the abstract factory.</tt> </tt>
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<a name="L35"></a><tt class="py-lineno">35</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
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<a name="L36"></a><tt class="py-lineno">36</tt> <tt class="py-line"><tt class="py-docstring"> Concrete implementations should call this from within their own __init__ method</tt> </tt>
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<a name="L37"></a><tt class="py-lineno">37</tt> <tt class="py-line"><tt class="py-docstring"> and register all their factories to keys using the register method.</tt> </tt>
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<a name="L38"></a><tt class="py-lineno">38</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
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<a name="L39"></a><tt class="py-lineno">39</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_factories</tt> <tt class="py-op">=</tt> <tt class="py-name">dict</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
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</div><a name="L40"></a><tt class="py-lineno">40</tt> <tt class="py-line"> </tt>
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<a name="L41"></a><tt class="py-lineno">41</tt> <tt class="py-line"> <tt class="py-decorator">@</tt><tt class="py-decorator">abstractmethod</tt> </tt>
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<a name="AbstractFactory.create"></a><div id="AbstractFactory.create-def"><a name="L42"></a><tt class="py-lineno">42</tt> <a class="py-toggle" href="#" id="AbstractFactory.create-toggle" onclick="return toggle('AbstractFactory.create');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pypat.creational.factory.AbstractFactory-class.html#create">create</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-op">**</tt><tt class="py-param">kwargs</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
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</div><div id="AbstractFactory.create-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="AbstractFactory.create-expanded"><a name="L43"></a><tt class="py-lineno">43</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
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<a name="L44"></a><tt class="py-lineno">44</tt> <tt class="py-line"><tt class="py-docstring"> Abstract create method.</tt> </tt>
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<a name="L45"></a><tt class="py-lineno">45</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
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<a name="L46"></a><tt class="py-lineno">46</tt> <tt class="py-line"><tt class="py-docstring"> Concrete implementations should return a new instance of an object by calling the appropriate factory.</tt> </tt>
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<a name="L47"></a><tt class="py-lineno">47</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
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<a name="L48"></a><tt class="py-lineno">48</tt> <tt class="py-line"><tt class="py-docstring"> @param kwargs: Arguments for object creation.</tt> </tt>
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<a name="L49"></a><tt class="py-lineno">49</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
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<a name="L50"></a><tt class="py-lineno">50</tt> <tt class="py-line"> <tt class="py-keyword">pass</tt> </tt>
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</div><a name="L51"></a><tt class="py-lineno">51</tt> <tt class="py-line"> </tt>
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<a name="AbstractFactory._register"></a><div id="AbstractFactory._register-def"><a name="L52"></a><tt class="py-lineno">52</tt> <a class="py-toggle" href="#" id="AbstractFactory._register-toggle" onclick="return toggle('AbstractFactory._register');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="pypat.creational.factory.AbstractFactory-class.html#_register">_register</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">key</tt><tt class="py-op">,</tt> <tt class="py-param">factory</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
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</div><div id="AbstractFactory._register-collapsed" style="display:none;" pad="++" indent="++++++++"></div><div id="AbstractFactory._register-expanded"><a name="L53"></a><tt class="py-lineno">53</tt> <tt class="py-line"> <tt class="py-docstring">"""</tt> </tt>
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<a name="L54"></a><tt class="py-lineno">54</tt> <tt class="py-line"><tt class="py-docstring"> Register a factory to a key.</tt> </tt>
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<a name="L55"></a><tt class="py-lineno">55</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
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<a name="L56"></a><tt class="py-lineno">56</tt> <tt class="py-line"><tt class="py-docstring"> @param key: Key for identifying which factory to use.</tt> </tt>
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<a name="L57"></a><tt class="py-lineno">57</tt> <tt class="py-line"><tt class="py-docstring"> @type key: str</tt> </tt>
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<a name="L58"></a><tt class="py-lineno">58</tt> <tt class="py-line"><tt class="py-docstring"> @param factory: The factory to register to the key.</tt> </tt>
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<a name="L59"></a><tt class="py-lineno">59</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt>
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<a name="L60"></a><tt class="py-lineno">60</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">_factories</tt><tt class="py-op">[</tt><tt class="py-name">str</tt><tt class="py-op">(</tt><tt class="py-name">key</tt><tt class="py-op">)</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt id="link-0" class="py-name" targets="Module pypat.creational.factory=pypat.creational.factory-module.html"><a title="pypat.creational.factory" class="py-name" href="#" onclick="return doclink('link-0', 'factory', 'link-0');">factory</a></tt> </tt>
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