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copied!<p>As <a href="http://effbot.org/zone/import-confusion.htm" rel="noreferrer">Fredrik Lundh states:</a></p> <blockquote> <p>Anyway, here’s how these statements and functions work:</p> <p><code>import X</code> imports the module X, and creates a reference to that module in the current namespace. Or in other words, after you’ve run this statement, you can use <code>X.name</code> to refer to things defined in module X.</p> <p><code>from X import *</code> imports the module X, and creates references in the current namespace to all public objects defined by that module (that is, everything that doesn’t have a name starting with “_”). Or in other words, after you’ve run this statement, you can simply use a plain name to refer to things defined in module X. But X itself is not defined, so <code>X.name</code> doesn’t work. And if name was already defined, it is replaced by the new version. And if name in X is changed to point to some other object, your module won’t notice.</p> <p><code>from X import a, b, c</code> imports the module X, and creates references in the current namespace to the given objects. Or in other words, you can now use <code>a</code> and <code>b</code> and <code>c</code> in your program.</p> <p><strong>Finally, <code>X = __import__(‘X’)</code> works like <code>import X</code>, with the difference that you 1) pass the module name as a string, and 2) explicitly assign it to a variable in your current namespace.</strong></p> </blockquote> <p>And by the way that's the last one method that you're intrested in.</p> <p>Simply write (for example):</p> <pre><code>var = "datetime" module = __import__(var) </code></pre>

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