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Mythology

The first great achievement of Apollo was to slay the huge serpent Python. In some texts Python is an enormous dragon and not a serpent.
But who was this mythical creature? Python was created out of the slime and mud left after the great flood. She was appointed by Gaia (Mother Earth) to guard the oracle of Delphi, known as Pytho. After having defeated Python Apollo remade her former home and the oracle as his own.

This topic in German / Deutsche Version: Memoisation und Dekorateure

Python 2.x

This tutorial deals with Python Version 2.x
This chapter from our course is available in a version for Python3: Memoization and Decorators

Classroom Training Courses

This website contains a free and extensive online tutorial by Bernd Klein.
If you are interested in an instructor-led classroom training, you may have a look at the Python trainings by Bernd Klein at Bodenseo

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Quote of the Day:

Computers are like bikinis. They save people a lot of guesswork.
(Sam Ewing)

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Advantages of Python

• Easy and fast to learn
• Simple to get support
• Python's syntax is clear and readable
• Fast to Code, i.e. it is easier and faster to code a problem in Python than in C, C++ or Java, just to mention a few other languages
• Python is portable, i.e. it runs on multiple platforms and systems, like e.g. Linux and Microsoft Windows
• Object oriented
• It's trendy, i.e more and more successful companies switch to Python, like Google did a long time ago.

Memoization and Decorators

Definition of Memoization

The term "memoization" was introduced by Donald Michie in the year 1968. It's based on the Latin word memorandum, meaning "to be remembered". It's not a misspelling of the word memorization, though in a way it has something in common. Memoisation is a technique used in computing to speed up programs. This is accomplished by memorizing the calculation results of processed input such as the results of function calls. If the same input or a function call with the same parameters is used, the previously stored results can be used again and unnecessary calculation are avoided.

Memoization can be explicitly programmed by the programmer, but some programming languages like Python provide mechanisms to automatically memoize functions.

Function Decorators in Python

Please continue with our article on Memoization in our Python3 tutorial. All the examples are running in Python2.x as well!