The Programming Historian (an open-access introduction to programming in Python)

0. About this book......Page 3
Why you might want to learn to program......Page 4
Install and set up software......Page 5
Linux instructions......Page 6
Mac instructions......Page 7
Windows instructions......Page 8
"Hello world" in Python......Page 10
Linux instructions......Page 11
Mac instructions......Page 12
"Hello world" in JavaScript......Page 13
Viewing HTML files......Page 14
"Hello World" in HTML......Page 15
Back up your work......Page 16
Suggested readings......Page 17
Sending information to text files......Page 18
Splitting code into modules and functions......Page 19
About URLs......Page 20
Opening URLs with Python......Page 21
Saving a local copy of a web page......Page 23
More about Python strings......Page 24
The stripTags routine......Page 26
Python lists......Page 27
Suggested Readings......Page 28
Cleaning up the list......Page 29
Our first use of regular expressions......Page 30
Python dictionaries......Page 31
Counting word frequencies......Page 32
From HTML to a dictionary of word-frequency pairs......Page 33
Removing stop words......Page 34
Putting it all together......Page 35
Putting new information where you can use it......Page 36
Creating HTML output......Page 37
Sending HTML output to Firefox......Page 38
Building an HTML wrapper......Page 39
Putting it all together......Page 40
Using word frequencies to refine a Google search......Page 41
Suggested Readings......Page 42
From text to n-grams......Page 43
Making an n-gram dictionary......Page 44
Pretty printing a KWIC......Page 45
From HTML to KWIC......Page 46
Turning each KWIC into a Google search link......Page 47
Visualizing term frequency......Page 48
Mapping one range onto another......Page 49
A little bit of CSS......Page 50
Functions to write HTML divs and spans......Page 51
Other dimensions for visualization......Page 52
Putting it all together......Page 53
Combining the tag cloud with KWIC......Page 54
The idea of text mining......Page 55
Selecting a group of biographies......Page 56
Extracting hyperlinks with Beautiful Soup......Page 57
Scraping with regular expressions......Page 58
Working with accented characters......Page 59
Some helper functions......Page 60
Putting it all together......Page 61
An overview......Page 63
Normalizing the files......Page 64
Mapping an anonymous function over a list......Page 65
Replacing stopwords with a placeholder......Page 66
Zip and tuples......Page 67
Putting it all together......Page 68
Getting started......Page 69
Working with files and web pages......Page 71
Computing frequencies......Page 72
Keyword in context (KWIC)......Page 73
Peer Reviewers......Page 74