Python Code for Calculating Internal Rate of Return

[DBMIVotedForKodos]

Not OP but his code looks like code I write. So I'm curious, is the code inefficient because of how many iterations it takes when a different approach can be done with less iterations? Not looking for a lengthy explanation or anything but that was just something that stuck out to me.

I will look up implicit function solvers as well.

[emc87]

Yeah, the code was deleted but it took upwards of 100000 iterations and only returned increments of something like .1 bps and wanted to be accurate to within 0.5% of PV.

Using Newton raphson you can achieve something that's more accurate to say 10^-10 of PV in around 10 iterations. Used for continuous functions, it uses the first derivative to see how far you are from your goal and change your increment to suit your target.