Book Image

Python for Finance

By : Yuxing Yan
Book Image

Python for Finance

By: Yuxing Yan

Overview of this book

Table of Contents (20 chapters)
Python for Finance
About the Author
About the Reviewers

Chapter 3. Using Python as a Financial Calculator

In this chapter, we will learn how to write simple functions such as estimation of the present value for a given future value, the present value of an annuity, and the monthly payment of our mortgage. In addition, we will show how to combine two dozens of small functions as a big Python program and use it for financial estimation. In other words, we plan to create a financial calculator using Python.

In particular, we will cover the following topics:

  • Writing a Python function without saving it

  • Why indentation is critical in Python

  • Three ways to input values and a default value for an input variable

  • Using dir() to check the existence of our newly generated function

  • Saving our pv_f() function

  • Activating our function from our Python editor using import()

  • While debugging a program, activate your program from a Python editor

  • import test01 versus from test01 import *

  • Removing a function using the del() method

  • Generating our own module

  • Two types of comments...