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    <p>Actually, a concise rule for Python Scope resolution, from <a href="http://rads.stackoverflow.com/amzn/click/0596513984" rel="noreferrer">Learning Python, 3rd. Ed.</a>. (These rules are specific to variable names, not attributes. If you reference it without a period, these rules apply)</p> <p>LEGB Rule.</p> <p><strong>L</strong>, Local — Names assigned in any way within a function (<code>def</code> or <code>lambda</code>)), and not declared global in that function.</p> <p><strong>E</strong>, Enclosing-function locals — Name in the local scope of any and all statically enclosing functions (<code>def</code> or <code>lambda</code>), from inner to outer.</p> <p><strong>G</strong>, Global (module) — Names assigned at the top-level of a module file, or by executing a <code>global</code> statement in a <code>def</code> within the file.</p> <p><strong>B</strong>, Built-in (Python) — Names preassigned in the built-in names module : <code>open</code>,<code>range</code>,<code>SyntaxError</code>,...</p> <p>So, in the case of</p> <pre><code>code1 class Foo: code2 def spam..... code3 for code4..: code5 x() </code></pre> <p>The for loop does not have its own namespace. In LEGB order, the scopes would be </p> <p>L : local, in <code>def spam</code> (in <code>code3</code>, <code>code 4</code>, <code>code5</code>).</p> <p>E : Enclosed function, any enclosing functions (if the whole example were in another <code>def</code>)</p> <p>G : Global. Were there any <code>x</code> declared globally in the module (<code>code1</code>)?</p> <p>B : Any builtin <code>x</code> in Python.</p> <p><code>x</code> will never be found in <code>code2</code> (even in cases where you might expect it would, see <a href="https://stackoverflow.com/a/23471004/2810305">Antti's answer</a> or <a href="https://stackoverflow.com/q/13905741/2810305">here</a>).</p>
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    1. POShort Description of the Scoping Rules?
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    1. USRizwan Kassim
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    1. COU did not cover the scope of `code2`. That is not a variable and is a class/instance attribute. Is that right.
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      1. USLakshman Prasad
    2. COmy intuition says that code2 exists inside the class scope of `Foo`, and could be accessed from any scope with access to `Foo` with `Foo.code2` or from within `Foo` with the same syntax. But I'm not sure yet where that falls within the LEGB mnemonic.
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      1. USConrad.Dean
    3. COAs a caveat to Global access - reading a global variable can happen without explicit declaration, but writing to it without declaring global(var_name) will instead create a new local instance.
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      1. USPeter Gibson
 

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