Python 版本过旧：ImportError: cannot import name '_setup_dialog` from 'tkinter.simpledialog' 遇到这个报错，是因为 Python 版本太旧。 以 Python 3.9 为例，最新的 IDLE 3.9 所使用的 _setup_dialog 函数是在 Python 3.9.5 添加的。
When use IDLE to open a file and start a new IDLE windows from "Python Shell" button, you can import the modules that are the child modules in the module "idlelib", such as "help", "pyshell". Think ...
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