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    <p>To get the type of an object, you can use the built-in <a href="http://docs.python.org/3/library/functions.html#type" rel="noreferrer"><code>type()</code></a> function. Passing an object as the only parameter will return the type object of that object:</p> <pre><code>&gt;&gt;&gt; type([]) is list True &gt;&gt;&gt; type({}) is dict True &gt;&gt;&gt; type('') is str True &gt;&gt;&gt; type(0) is int True &gt;&gt;&gt; type({}) &lt;type 'dict'&gt; &gt;&gt;&gt; type([]) &lt;type 'list'&gt; </code></pre> <p>This of course also works for custom types:</p> <pre><code>&gt;&gt;&gt; class Test1 (object): pass &gt;&gt;&gt; class Test2 (Test1): pass &gt;&gt;&gt; a = Test1() &gt;&gt;&gt; b = Test2() &gt;&gt;&gt; type(a) is Test1 True &gt;&gt;&gt; type(b) is Test2 True </code></pre> <p>Note that <code>type()</code> will only return the immediate type of the object, but won’t be able to tell you about type inheritance.</p> <pre><code>&gt;&gt;&gt; type(b) is Test1 False </code></pre> <p>To cover that, you should use the <a href="http://docs.python.org/3/library/functions.html#isinstance" rel="noreferrer"><code>isinstance</code></a> function. This of course also works for built-in types:</p> <pre><code>&gt;&gt;&gt; isinstance(b, Test1) True &gt;&gt;&gt; isinstance(b, Test2) True &gt;&gt;&gt; isinstance(a, Test1) True &gt;&gt;&gt; isinstance(a, Test2) False &gt;&gt;&gt; isinstance([], list) True &gt;&gt;&gt; isinstance({}, dict) True </code></pre> <p><code>isinstance()</code> is usually the preferred way to ensure the type of an object because it will also accept derived types. So unless you actually need the type object (for whatever reason), using <code>isinstance()</code> is preferred over <code>type()</code>.</p> <p>The second parameter of <code>isinstance()</code> also accepts a tuple of types, so it’s possible to check for multiple types at once. <code>isinstance</code> will then return true, if the object is of any of those types:</p> <pre><code>&gt;&gt;&gt; isinstance([], (tuple, list, set)) True </code></pre>
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    1. COI think it's clearer to use `is` instead of `==` as the types are singletons
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      1. USJohn La Rooy
    2. CO@gnibbler, In the cases you would be typechecking (which you shouldn't be doing to begin with), `isinstance` is the preferred form anyhow, so neither `==` or `is` need be used.
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      1. USMike Graham
    3. CO@Mike Graham, there are times when `type` is the best answer. There are times when `isinstance` is the best answer and there are times when duck typing is the best answer. It's important to know all of the options so you can choose which is more appropriate for the situation.
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