获取嵌套字典值的安全方法 - Safe method to get value of nested dictionary

问题：

I have a nested dictionary.我有一个嵌套字典。 Is there only one way to get values out safely?只有一种方法可以安全地获取值吗？

try:
    example_dict['key1']['key2']
except KeyError:
    pass

Or maybe python has a method like get() for nested dictionary ?或者 python 有一个像get()的嵌套字典的方法？

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解决方案：

参考一： https://en.stackoom.com/question/1kOVB
参考二： https://stackoom.com/question/1kOVB