2009 109

Looked at some examples:

• http://www.danos.nl/teog
• http://www.misspelling-generator.org/

In-class, doing Exercise 12.3

Write a function called most_frequent that takes a string and prints the letters in decreasing order of frequency. Find text samples from several different languages and see how letter frequency varies between languages. Compare your results with the tables at http://wikipedia.org/wiki/Letter_frequencies.

Recall the Historgram function from Chapter 9, p.105:

def histogram(s):
	d = dict()
	for c in s:
		if c not in d:
			d[c] = 1
		else:
			d[c] += 1
	return d

Python Image Library

farah: search and replace text

text = open("house_arrest.html").read()



# replacements = {}
# replacements["India"] =  "*****";
# replacements["Azhar"] =  "$$$$$$$";

import re
replacements = []
replacements.append( (re.compile(r"\bindia\b", re.I), "******" ) );
replacements.append( (re.compile(r"azhar", re.I), "$$$$" ) );



for pattern, replacement in replacements:
	text = pattern.sub(replacement, text)

print text