See Jack Hack. Hack, Jack, Hack

In one form or another, processing text-based information is one of the more common tasks that applications need to perform. This can include anything from scanning a text file by columns to analyzing statements in a language defined by a formal grammar. Such processing usually is called parsing -- analyzing the structure of a text string. In this chapter, we'll explore ways to handle language and text-based information and summarize some Python development concepts in sidebars along the way.

Some of this material is advanced, but the examples are small. For instance, recursive descent parsing is illustrated with a simple example to show how it can be implemented in Python. We'll also see that it's often unnecessary to write custom parsers for each language processing task in Python. They can usually be replaced by exporting APIs for use in Python programs, and sometimes by a single built-in function call. Finally, this chapter closes by presenting PyCalc -- a calculator GUI written in Python, and the last major Python coding example in this text. As we'll see, writing calculators isn't much more difficult than juggling stacks while scanning text.

Introducing Python

Part I: System Interfaces

System Tools

Parallel System Tools

Larger System Examples I

Larger System Examples II

Part II: GUI Programming

Graphical User Interfaces

A Tkinter Tour, Part 1

A Tkinter Tour, Part 2

Larger GUI Examples

Part III: Internet Scripting

Network Scripting

Client-Side Scripting

Server-Side Scripting

Larger Web Site Examples I

Larger Web Site Examples II

Advanced Internet Topics

Part IV: Assorted Topics

Databases and Persistence

Data Structures

Text and Language

Part V: Integration

Extending Python

Embedding Python

VI: The End

Conclusion Python and the Development Cycle

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Programming Python
Python Programming for the Absolute Beginner, 3rd Edition
ISBN: 1435455002
EAN: 2147483647
Year: 2000
Pages: 245
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