To illustrate magic methods, we will use a couple of simple user defined classes as examples. These will be extended by adding magic methods in the remaining articles.
The Person class
Here is a simple Person class:
class Person: def __init__(self, title, forename, surname): self.title = title self.forename = forename self.surname = surname
This class simply holds the person's title, forename and surname as string fields.
The Matrix class
We will define a class that holds the values for a 2 by 2 matrix
$$\begin{pmatrix}a & b\\c & d\end{pmatrix}$$
Here is the simple Matrix class:
class Matrix: def __init__(self, a, b, c, d): self.data = [a, b, c, d]
If you found this article useful, you might be interested in the book Functional Programming in Python, or other books, by the same author.
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