[Python] How to get the index with the key in a dictionary?

I have the key of a python dictionary and I want to get the corresponding index in the dictionary. Suppose I have the following dictionary,

d = { 'a': 10, 'b': 20, 'c': 30}


Is there a combination of python functions so that I can get the index value of 1, given the key value 'b'?

d.??('b')


I know it can be achieved with a loop or lambda (with a loop embedded). Just thought there should be a more straightforward way.

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