1. LING 388: Computers and Language
Lecture 12

2. Administrivia Apologies for the wrong index.html page loaded:
problem fixed yesterday
Reminder:
Homework 5 due on Wednesday midnight

3. Unicode characters ok in Python 3.x
Python regex
Unicode characters ok in Python 3.x
Summary (so far):
\w a character [A-Za-z0-9_]
\d [0-9]
\b word boundary
\s space character [ \t\n\r\f\v]
Operators:
* zero or more repeats
+ one or more repeats
( ) grouping
Raw string (avoid escaping \):
r"\w+"
Negation:
\W anything not in \w
\D anything not in \d
Full Documentation:

4. Review examples

5. Review examples

6. Review examples

7. Python regex Other useful meta-characters: ^ matches beginning of line
$ matches end of line
\n n = group number, must match identically to group

8. Python regex
More examples from