Python对象对重新执行程序的持久性 [英] Python object persistence over re-execs

问题描述

通过运行脚本的重新执行持久化对象的方法在哪里?如果我希望正在运行的脚本重新执行自身以获取任何代码更改，(os.exec *)是否可以在重新执行后持久保存对象以进行访问?我可以使用腌制的ascii数据设置环境变量，或将数据写入管道并在重新执行后重新读取它，但这看起来不雅或像黑客一样.即使这样做，也不是所有物品都能腌制得很好.

Is where a way to persist objects over re-execs of a running script? If I want a running script to re execute itself to pick up any code changes, (os.exec*) is there a way to persist the objects for access after the re-execution? I could set environment variables with pickled ascii data, or write that data to a pipe and re-read it after the re-execution, but that seems inelegant or like a hack. Even if doing that, not all items pickle well.

推荐答案

如果将代码放在模块中，则可以使用

If you put your code in a module, you can use the reload() standard function to load the new version of the code. Your main module could look like this:

import mymodule

while mymodule.go():
    reload(mymodule)

每当要重新加载模块代码时，请从go()返回True.要退出时，返回False.

Whenever you want to reload your module code, return True from go(). When you want to exit, return False.

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