What's the best Python Function to Step-by-Step calculate the formula: logit(p)=ln(odds)=ln(p/(1-p))

Such as to return the [step-by-step] calculated answer of 26 per cent, for solving the following: logit(probability of positive diabetes test) = -0.341 + 0.23 * BMI; for each unit change in BMI, what percentage do the odds of becoming diabetic increase by? Given that: if p is the probability then p/(1-p)is the odds; while the natural logarithm of the odds is the logit of the probability.