closures - Syntax Query in Python Statement - 


[b _, b in sorted(enumerate(arr, 1), key=lambda x: int.__mul__(*x))]

is list comprehension in python meant sort array in ascending order while using value @ each place multipled 1-based index

so [4, 3, 1] sorted based on [4*1, 3*2, 1*3] giving [1, 4, 3].

i trying understand: 1. how _ in code works 2. how *x multiplies value index (since enumerate has 1 parameter, assuming how 1-based indexing taken care of).


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