<< Chapter < Page | Chapter >> Page > |
This module is one in a collection of modules on Python designed for teaching ITSE 1359 Introduction to Scripting Languages: Python at Austin Community College in Austin, TX. It provides an introduction to the use of stringsin Python.
I recommend that you open another copy of this module in a separate browser window and use the following links to easily find and view theFigures while you are reading about them.
(Note to blind and visually impaired students: most of the Figures in this module are presented in plaintext format and should be accessible using an audio screen reader or a braille display.)
The common interpretation of the word string in computer programming is that a string is a sequence of characters that is treated as a unit. For example, a person's first and last names are often treated as two differentstrings.
A person's first name usually consists of several characters and these characters are treated as a unit to produce a name.
Perhaps the best way to describe a literal is to describe what it is not.
A literal is not a variable. In other words, the value of a literal doesn't change with time as the program executes. You might say that it is taken at facevalue.
For example, the following expression describes the sum of two variables named var1 and var2 :
sum = var1 + var2
The result of this expression can vary depending on the values stored in var1 and var2 at the instant in time that the expression is evaluated.
Notification Switch
Would you like to follow the 'Itse 1359 introduction to scripting languages: python' conversation and receive update notifications?