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<H3>
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2.1.7.3 Functions
</H3>
<P>
Function objects are created by function definitions. The only
operation on a function object is to call it:
<code><var>func</var>(<var>argument-list</var>)</code>.
<P>
There are really two flavors of function objects: built-in functions
and user-defined functions. Both support the same operation (to call
the function), but the implementation is different, hence the
different object types.
<P>
The implementation adds two special read-only attributes:
<code><var>f</var>.func_code</code> is a function's <i class="dfn">code
object</i> (see below) and <code><var>f</var>.func_globals</code> is
the dictionary used as the function's global namespace (this is the
same as <code><var>m</var>.__dict__</code> where <var>m</var> is the module in which
the function <var>f</var> was defined).
<P>
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