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    <p><a href="http://docs.python.org/reference/expressions.html" rel="noreferrer">Expressions</a> only contain <a href="http://docs.python.org/release/2.5.2/ref/identifiers.html" rel="noreferrer">identifiers</a>, <a href="http://docs.python.org/release/2.5.2/ref/literals.html" rel="noreferrer">literals</a> and <a href="http://docs.python.org/release/2.5.2/ref/operators.html" rel="noreferrer">operators</a>, where operators include arithmetic and boolean operators, the function <a href="https://docs.python.org/3/reference/expressions.html?highlight=subscriptions#calls" rel="noreferrer">call operator</a> <code>()</code> the <a href="https://docs.python.org/3/reference/expressions.html?highlight=subscriptions#grammar-token-subscription" rel="noreferrer">subscription operator</a> <code>[]</code> and similar, and can be reduced to some kind of "value", which can be any Python object. Examples:</p> <pre><code>3 + 5 map(lambda x: x*x, range(10)) [a.x for a in some_iterable] yield 7 </code></pre> <p>Statements (see <a href="http://docs.python.org/reference/simple_stmts.html" rel="noreferrer"><a href="https://docs.python.org/3/reference/expressions.html?highlight=subscriptions#calls" rel="noreferrer">1</a></a>, <a href="http://docs.python.org/reference/compound_stmts.html" rel="noreferrer"><a href="https://docs.python.org/3/reference/expressions.html?highlight=subscriptions#grammar-token-subscription" rel="noreferrer">2</a></a>), on the other hand, are everything that can make up a line (or several lines) of Python code. Note that expressions are statements as well. Examples:</p> <pre><code># all the above expressions print 42 if x: do_y() return a = 7 </code></pre>
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    1. COexpressions are _parts_ of statements
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    2. CO@bismigalis: Every valid Python expression can be used as a statement (called an ["expression statement"](http://docs.python.org/2/reference/simple_stmts.html#expression-statements)). In this sense, expressions *are* statements.
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