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POShould I use "self" to define variables / objects of class instanced which I will not need to reach from the outside?
 

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  1. POShould I use "self" to define variables / objects of class instanced which I will not need to reach from the outside?
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    <p>I am not a complete beginner but fairly new to <strong>Python</strong>. Whilst working on a project today I just had an idea and wondered regarding the usage of "<strong>self</strong>"; about which I've been reading for the past some while and I still can not figure out if it's always necessary or not. My question solely concerns instances of classes and instance parameters/variables. <strong>This question is not about Class Variables which affect all instances</strong>.</p> <p><strong>Example</strong>:</p> <pre><code>class C: def __init__(self, parent = None): super(C, self).__init__(parent) self.some_temp_var = AnotherClass() self.important_property = self.some_temp_var.bring_the_jewels() ins_c = C() print ins_c.important_property </code></pre> <p>In the above code, I use <strong>self</strong> before both variable declarations (<strong>some_temp_var</strong> and <strong>important_property</strong>).</p> <p>I <strong>will need to access</strong> **important_property** later from the outside (where instance's been created) and maybe even modify it.</p> <p>But I will not need access to the instance of AnotherClass() and/or variable pointing to it (<strong>some_temp_var</strong>). I just need an instance of it class once, and I need to execute its method bring_the_jewels only once to populate value of <strong>important_property</strong>. </p> <p>Should I still use self before declaring that variable as well?</p> <pre><code>self.some_temp_var = .... self.important_property = .... </code></pre> <p>or can it be:</p> <pre><code>some_temp_var = .... self.important_property = .... </code></pre> <p>Thank you for your help.</p> <p><em>Ps. I did my research in a length way. Due to lack of my English and/or CS knowledge, I may not have found a currently existing duplicate however I did search and I did search a lot. Before calling this question "duplicate" or "not constructive" please read it throughly. This is a question with clear answer and it's very important, and complicated matter. Thank you for your understanding.</em></p>
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