可以使用异常捕获来提供 “goto结构” ,甚至可以跨函数调用工作的 。许多人认为异常捕获可以方便地模拟C,Fortran和其他语言的 “go” 或 “goto” 结构的所有合理用法。例如:
<span class="k">class</span> <span class="nc">label</span><span class="p">(</span><span class="ne">Exception</span><span class="p">):</span> <span class="k">pass</span> <span class="c1"># declare a label</span>
<span class="k">try</span><span class="p">:</span>
<span class="o">...</span>
<span class="k">if</span> <span class="n">condition</span><span class="p">:</span> <span class="k">raise</span> <span class="n">label</span><span class="p">()</span> <span class="c1"># goto label</span>
<span class="o">...</span>
<span class="k">except</span> <span class="n">label</span><span class="p">:</span> <span class="c1"># where to goto</span>
<span class="k">pass</span>
<span class="o">...</span>
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但是不允许你跳到循环的中间,这通常被认为是滥用goto。谨慎使用。
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