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55 | <H1><A NAME="SECTION008700000000000000000"></A><A NAME="return"></A> | |
56 | <BR> | |
57 | 6.7 The <tt class="keyword">return</tt> statement | |
58 | </H1> | |
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60 | <P> | |
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65 | <td><a id='tok-return_stmt' xml:id='tok-return_stmt'>return_stmt</a></td> | |
66 | <td>::=</td> | |
67 | <td>"return" [<a class='grammartoken' href="exprlists.html#tok-expression_list">expression_list</a>]</td></tr> | |
68 | </table> | |
69 | </div> | |
70 | <a class="grammar-footer" | |
71 | href="grammar.txt" type="text/plain" | |
72 | >Download entire grammar as text.</a> | |
73 | </dd></dl> | |
74 | ||
75 | <P> | |
76 | <tt class="keyword">return</tt> may only occur syntactically nested in a function | |
77 | definition, not within a nested class definition. | |
78 | <a id='l2h-507' xml:id='l2h-507'></a><a id='l2h-508' xml:id='l2h-508'></a> | |
79 | <P> | |
80 | If an expression list is present, it is evaluated, else <code>None</code> | |
81 | is substituted. | |
82 | ||
83 | <P> | |
84 | <tt class="keyword">return</tt> leaves the current function call with the expression | |
85 | list (or <code>None</code>) as return value. | |
86 | ||
87 | <P> | |
88 | When <tt class="keyword">return</tt> passes control out of a <tt class="keyword">try</tt> statement | |
89 | with a <tt class="keyword">finally</tt> clause, that <tt class="keyword">finally</tt> clause is executed | |
90 | before really leaving the function. | |
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93 | In a generator function, the <tt class="keyword">return</tt> statement is not allowed | |
94 | to include an <a class='grammartoken' href="exprlists.html#tok-expression_list">expression_list</a>. In that context, a bare | |
95 | <tt class="keyword">return</tt> indicates that the generator is done and will cause | |
96 | <tt class="exception">StopIteration</tt> to be raised. | |
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