Hello, it would be nice to have financial functions that microsoft excel has. Some examples would be PMT, FV - see examples below. Basically anything that tells you data regarding loans and annuities.
My current alternative is to ask ChatGPT to come up with formulas in Python because I’ve been using no code relational database software so not familiar with Python at all. 
That’s a fair request. I suggest asking for it in GitHub · Where software is built, because it’s a kind of thing that an independent contributor could implement sooner than our team gets to it.
Meanwhile, here’s an implementation of the PMT function that I’ve used myself (the entire block of text is the formula, including the def part):
def PMT(rate, nper, pv, fv=0, type=0):
growth = pow(1 + rate, nper)
pmt = rate / (growth - 1) * -(pv * growth + fv)
if type == 1:
pmt /= (1 + rate)
return pmt
-round(PMT($Monthly_Rate, $Num_Periods, $Initial_Amount), 2)