`fv` (rate, nper, pmt, pv[, when]) | Compute the future value. |

`pv` (rate, nper, pmt[, fv, when]) | Compute the present value. |

`npv` (rate, values) | Returns the NPV (Net Present Value) of a cash flow series. |

`pmt` (rate, nper, pv[, fv, when]) | Compute the payment against loan principal plus interest. |

`ppmt` (rate, per, nper, pv[, fv, when]) | Compute the payment against loan principal. |

`ipmt` (rate, per, nper, pv[, fv, when]) | Compute the interest portion of a payment. |

`irr` (values) | Return the Internal Rate of Return (IRR). |

`mirr` (values, finance_rate, reinvest_rate) | Modified internal rate of return. |

`nper` (rate, pmt, pv[, fv, when]) | Compute the number of periodic payments. |

`rate` (nper, pmt, pv, fv[, when, guess, tol, ...]) | Compute the rate of interest per period. |

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Licensed under the NumPy License.

https://docs.scipy.org/doc/numpy-1.13.0/reference/routines.financial.html