IT 117: Intermediate Scripting
Class 11

Today's Topics


New Material

Homework 6

I have posted homework 6 here.

It is due this coming Sunday at 11:59 PM.


The mid-term exam will be given on Tuesday, March 20th.

This is the first Tuesday after the Spring break.

It will consist of questions like those on the quizzes along with questions asking you to write short segments of Python code.

60% of the points on this exam will consist of questions from the Ungraded Class Quizzes.

The last class before the exam, Thursday, March 8th, will be a review session.

You will only be responsible for the material in the Class Notes for that class on the exam.

The Mid-term is a closed book exam.

Quiz 2

I have posted the answers to Quiz 2 here.


Working with the Operating System

The os Module




os.rename(old_name, new_name)


os.rmdir(path )

os.mkdir(path )

Running Unix Commands within Python


The os.path Module

os.path.isfile(path) and os.path.isdir(path)


The sys Module

Getting Values from the Command Line

Leaving a Running Script

Usage Messages

New Material

Regular Expressions

Working with Regular Expressions

The Characters in Regular Expressions

Ordinary Characters in Regular Expressions

Using Regular Expressions to Find a Match

Pattern Objects

Raw Strings

A Test Function for Regular Expressions

Meta-characters in Regular Expressions

The . Meta-character

The * Meta-character

The + Meta-character

The ? Meta-character

Match Starts from Beginning of String

The \ Meta-character

Character Classes

\d and \D Character Classes

The \w and \W Character Classes

The \s and \S Character Classes


Graded Quiz