IT 116: Introduction to Scripting

IT 116: Introduction to Scripting
Class 3 Exercise

Practice with interactive mode

Run IDLE on your machine

Print the the name of our University

>>> print("University of Massachusetts at Boston")

Print our street address
```
>>> print("100 Morrissey Boulevard")
```
Print our city and state
```
>>> print("Boston, Massachusetts")
```
Print our zip code
```
>>> print("02125-3393")
```
Write a comment
```
>>> # Hello world!
```
Nothing prints because the Python interpreter ignores everything after #.
Create a variable
```
>>> number = 20
```
Print the value of the variable you just created
```
>>> print(number)
```
Change the value of the variable
```
>>> number = number + 1
```
Print the new value of this variable
```
>>> print(number)
```

Script for this exercise

Open a text editor
You can use the editor built into IDLE or use a program like Sublime.
Copy the text below into the file

Save the file as ex3.py
Run this script in IDLE
Open the script file in IDLE. Under the Run menu, select Run Module.

You should see

a + b + c =  21
a * b + c =  40
a * b * c =  300
c - b - a =  -1
a * b / c =  3.0

University of Massachusetts at Boston
100 Morrissey Boulevard
Boston, Massachusetts
02125-3393

Unix setup

Log in to users3.cs.umb.edu
You will be in your home directory.
Go to your it116 directory
```
cd it116
```
Go to your ex directory
```
cd ex
```
Create a directory for this exercise
```
mkdir  ex3
```
Check that the directory was created
```
ls
```

Copy the file to Unix

Open FileZilla and connect to users3.cs.umb.edu
You will have to connect using your Unix username and password.
Copy the file to the to it116/ex/ex3

Testing the script on Unix

Connect to users3.cs.umb.edu
Use an ssh client.
Go to the directory for this exercise
```
cd  it116/ex/ex3
```
Run this script
```
python3 ex3.py
```

You should see

a + b + c =  21
a * b + c =  40
a * b * c =  300
c - b - a =  -1
a * b / c =  3.0

University of Massachusetts at Boston
100 Morrissey Boulevard
Boston, Massachusetts
02125-3393

Running my test script on your script

If you want to run my text script on your Class Exercise script do the following
Run ex03.sh on your script
```
~ghoffman/it116_test/ex03.sh
```
The script will prompt you for your Unix username.