I need to solve the equation x + y + z = 1.

I need to generate all the possible combinations of x, y, z so the equation is correct

I want the values of x, y, z to be between 0.1 and 0.9 with jump of 0.1.

So the values are restricted to [0.1, 0.2, ..., 0.8, 0.9]

I have found this answer [Finding all combinations of multiple variables summing to 1](https://stackoverflow.com/questions/28507040/finding-all-combinations-of-multiple-variables-summing-to-1)

However it applies to R not python.

It would be very helpfull if someone would enlighten me.