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    <p>Two things to note here:</p> <ul> <li>In Python, modules are actual objects, and the dot that appears between their names represents an actual attribute access</li> <li>You are doing a relative import, meaning that <code>Source</code> is actually <code>PyModTest.Source</code> (thanks to TokenMacGuy for pointing this out)</li> </ul> <p>So: in order to import <code>PyModTest.Source.WildMod.WildFunc</code>, Python has to</p> <ol> <li>import <code>PyModTest</code> (which was already done by you)</li> <li>check and see if it has an attribute called <code>Source</code>, and if not, create the attribute by importing it from <code>PyModTest/Source/__init__.py</code></li> <li>check and see if that has an attribute called <code>WildMod</code>, and if not, create the attribute by importing it from <code>PyModTest/Source/WildMod.py</code></li> <li>check and see if that has an attribute called <code>WildFunc</code> (which it does)</li> </ol> <p>Some relevant details are discussed in <a href="http://www.python.org/dev/peps/pep-0302/" rel="noreferrer">PEP 302</a> and in the <a href="http://docs.python.org/reference/simple_stmts.html#the-import-statement" rel="noreferrer">Python language reference</a>.</p> <blockquote> <p>Deeper down in the mechanism, a dotted name import is split up by its components. For "<code>import spam.ham</code>", first an "<code>import spam</code>" is done, and only when that succeeds is "<code>ham</code>" imported as a submodule of "<code>spam</code>".</p> </blockquote> <p>If you don't want to have a variable named <code>Source</code>, that's easy to fix: just <code>del Source</code> after you import the function. But bear in mind that it will prevent any code that runs later on from accessing <code>PyModTest.Source.&lt;anything&gt;</code> (except for <code>WildFunc</code>, since you have saved a reference to that). I would definitely suggest just ignoring the reference to <code>Source</code>, not deleting it, since it's not hurting anything.</p>
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    1. POpython import package - subpackage should not show up in symbol table
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    1. COAwesome, that makes sense. Thanks for the suggestion on the 'del Source' :)
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    2. CO`Source` is a subpackage of `PyModTest`, the implicit import is silently transformed into `from PyModTest.Source import ...`, and so the `Source` module must be added as an attribute of the `PyModTest` module. If `Source` had been found outside the `PyModTest` package (unlikely, subpackages take precedence over `sys.path`), this would not have occured. To avoid confusing yourself and others, always prefer absolute imports.
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    3. CO@TokenMacGuy: ah, good catch. Somehow I missed the fact that this was a relative import.
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