What is the exponent in the calculation?

[kwstat]

The formula for H shows the distances are raised to the dth power.
Although I don't know python, it appears that in the calculations the distances are raised to the 1st power, not the dth power.
Am I misreading the code?

Update: I have published an article that shows why it is necessary to raise the distances to the dth power: https://journal.r-project.org/articles/RJ-2022-055/