Chapter 3. Get to Grips with Commonly Used Functions

In this chapter, we will cover a number of commonly used functions:

• sqrt, log, arange, astype, and sum

• ceil, modf, where, ravel, and take

• sort and outer

• diff, sign, eig

• histogram and polyfit

• compress and randint

We will be discussing these functions through the following recipes:

• Summing Fibonacci numbers

• Finding prime factors

• Finding palindromic numbers

• The steady state vector determination

• Discovering a power law

• Trading periodically on dips

• Simulating trading at random

• Sieving integers with the Sieve of Eratosthenes