[10/19/2011]

Quiz #3 on table -- please pick up

Quiz #4 today (list comprehensions and regular expressions)

==========================================================================

\(?\d{3}[\)\-]?\d{3}\-?\d{4}

the \(? matches zero or one open-parens

next, the \d{3} matches 3 digit characters [0-9]

next, the [\)\-]? matches zero or one of a single char from ) or -

next, the \d{3} matches 3 digit characters [0-9]

next, the \-? matches zero or one - characters

next, the \d{4} matches 4 digit characters [0-9]

  [a-z ]   [a-z\s]



   \s*\d{3}\s*\d{3}\s*\d{4}



   match abxx or cdxx

     (ab|cd)xx






    David E. Goldschmidt, Ph.D.

    David E Goldschmidt Ph D
    David E Goldschmidt PhD

    i.b.m. ==> ibm or i b m
    r2-d2 ==> r2d2  or  r2 d2



==========================================================================
Python 3.2 (r32:88445, Mar 25 2011, 19:28:28) 
[GCC 4.5.2] on linux2
Type "copyright", "credits" or "license()" for more information.
==== No Subprocess ====
>>> name = 'monty python'
>>> name[8:5:-1] + name[3::-2]
'typto'
>>> sentence = 'the quick brown fox jumps over the lazy dog'
>>> sentence.split( ' ' )
['the', 'quick', 'brown', 'fox', 'jumps', 'over', 'the', 'lazy', 'dog']
>>> sentence.split( ' ' )[2]
'brown'
>>> sentence.split( ' ' )[3]
'fox'
>>> sentence.split( ' ' )[4]
'jumps'
>>> sentence
'the quick brown fox jumps over the lazy dog'
>>> sentence.replace( 'the', 'a' ).replace( 'quick ', '' )
'a brown fox jumps over a lazy dog'
>>> 
>>> 
>>> 
>>> sentence.replace( 'the', 'a' ).replace( 'lazy ', '' )
'a quick brown fox jumps over a dog'
>>> sentence.replace( 'the', 'a' ).replace( 'brown ', '' )
'a quick fox jumps over a lazy dog'
>>> 
>>> sentence
'the quick brown fox jumps over the lazy dog'
>>> 
>>> 
>>> 
>>> import re
>>> 
>>> re.sub( '\w+o\w+', '<bleep>', sentence )
'the quick <bleep> <bleep> jumps over the lazy <bleep>'
>>> 
>>> sentence
'the quick brown fox jumps over the lazy dog'
>>> 
>>> sentence
'the quick brown fox jumps over the lazy dog'
>>> number = '518-276-6000 ext.1234'
>>> m = re.match( '\(?\d{3}[\)\-]?\d{3}\-?\d{4}', number )
>>> if m:
	m.group( 0 )

	
'518-276-6000'
>>> 
>>> 
>>> m.group( 1 )
Traceback (most recent call last):
  File "<pyshell#33>", line 1, in <module>
    m.group( 1 )
IndexError: no such group
>>> m = re.match( '\(?(\d{3})[\)\-]?\d{3}\-?\d{4}', number )
>>> if m:
	m.group( 0 )
	m.group( 1 )

	
'518-276-6000'
'518'
>>> m = re.match( '\(?(\d{3})[\)\-]?(\d{3}\-?(\d{4}))', number )
>>> if m:
	m.group( 0 )
	m.group( 1 )
	m.group( 2 )
	m.group( 3 )

	
'518-276-6000'
'518'
'276-6000'
'6000'
>>> 
Enter number: 16
p1 search() yes!
p2 search() yes: efgh5678 8 20
>>> 
Enter number: 7
p1 search() yes!
p2 match() yes: abcd123 0 11
p2 search() yes: abcd123 0 11
>>> 
Enter number: 21
p1 search() yes!
>>> 
Enter number: 14
p1 search() yes!
p2 search() yes: efgh56 8 18
>>> 
Enter number: 5
p1 search() yes!
p2 match() yes: abcd1 0 9
p2 search() yes: abcd1 0 9
>>> 
Enter number: 20
p1 search() yes!
>>> 
Enter number: 15
p1 search() yes!
p2 search() yes: efgh567 8 19
>>> 
Enter number: 6
p1 search() yes!
p2 match() yes: abcd12 0 10
p2 search() yes: abcd12 0 10
>>> 
Enter number: 19
p1 search() yes!
>>> 
>>>