擅长:python、mysql、java
<p>Python编译器将在遇到print语句时加载GLOBAL,其中它作为未定义的变量“A”失败。如果您尝试反汇编代码[import dis],您将看到后端进程调用的执行</p>
<p>本文给出了一个很好的解释
<a href="https://stackoverflow.com/questions/25076883/creating-dynamically-named-variables-in-a-function-in-python-3-understanding-e">Creating dynamically named variables in a function in python 3 / Understanding exec / eval / locals in python 3
</a></p>