1. 1
Python Lab #1
Intro to Python
Adriane Huber
Debbie Bartlett

2. 2
Python Lab #1
Python
Named derived from TV series, Monty Python’s Flying Circus, not the snake
Important goal of developers was to make it fun
Common practice was to make Monty Python references in example code
Created by Guido Van Rossum in 1991
Python is often compared to Tcl, Perl, Ruby, Scheme or Java
Why use Python?
General-purpose, interpreted high-level programming language
Design philosophy emphasizes code readability
Supports multiple programming paradigms
object-oriented and to a lesser extent functional
Can be used in a scripting or non-scripting context

3. Sample Python Script def greet (): print (“Hello, World!”)3
Python Lab #1
Sample Python Script
def greet ():
print (“Hello, World!”)
name = input (“Enter your name:”)
if name == “Debbie”:
print (“Hello, Debbie! I am glad that you are in CS192 today!”)
else:
print (“Hello”, name)
greet()

4. Python Scripts Creating a Python Script4
Python Lab #1
Python Scripts
Creating a Python Script
Use a text editor such as gedit
Name the file greet.py
Write your script in greet.py
Save greet.py
To run python program in terminal window, type:
python3.3 greet.py

5. Python Lab1 Assignment Type your own version of the python script5
Python Lab #1
Python Lab1 Assignment
Type your own version of the python script
What happens if you
don’t use quotes around the first print statement?
Take them off, try it, then put them back
delete the tab in front of the first print statement?
Try it, put it back
remove the colon at the end of the first statement that begins with def?
Ask another question in your script
Google a “while loop”
Add a while loop to your Python Script
Show your script to a lab instructor or helper