IT 116: Introduction to Scripting

IT 116: Introduction to Scripting
Class 12 Exercise

Practice in interactive mode

Run Idle on your machine
```
python3
```

Create the function cheer_1

>>> def cheer_1(team):
...    print("Go " + team + "!")
...

Run this function
```
cheer_1("Red Sox")
```

Create a function that uses a global variable

def cheer_2():
...    print("Go " + team + "!")
...

Run this function
```
>>> team = "Patriots"
>>> cheer_2()
```

Create a function with a default value

def cheer_3(team, times=3):
...    for i in range(times):
...       print("Go " + team + "!")
...

Run this function with different function calls

>>> cheer_3("Red Sox", 5)
>>> cheer_3("Red Sox", 1)
cheer_3("Red Sox")

Script for this exercise

Open a text editor
A program like Sublime.
Do not use Word or Notepad.
Copy the text below into the file

Save the file as ex12.py
Run this script in IDLE
Open the script file in IDLE. Under the Run menu, select Run Module.

You should see

Go Patriots!
Go Patriots!

Go Red Sox!
Go Red Sox!
Go Red Sox!

Go Bruins!

1 squared is 1
2 squared is 4
3 squared is 9
4 squared is 16
5 squared is 25

1 cubed is 1
2 cubed is 8
3 cubed is 27
4 cubed is 64
5 cubed is 125

1 multiplied by itself 2 times is 1
2 multiplied by itself 2 times is 4
3 multiplied by itself 2 times is 9
4 multiplied by itself 2 times is 16
5 multiplied by itself 2 times is 25

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  ex12
```
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/ex12

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/ex12
```
Run this script
```
python3 ex12.py
```

You should see

Go Patriots!
Go Patriots!

Go Red Sox!
Go Red Sox!
Go Red Sox!

Go Bruins!

1 squared is 1
2 squared is 4
3 squared is 9
4 squared is 16
5 squared is 25

1 cubed is 1
2 cubed is 8
3 cubed is 27
4 cubed is 64
5 cubed is 125

1 multiplied by itself 2 times is 1
2 multiplied by itself 2 times is 4
3 multiplied by itself 2 times is 9
4 multiplied by itself 2 times is 16
5 multiplied by itself 2 times is 25

Running my test script on your script

If you want to run my text script on your Class Exercise script do the following
Run ex12.sh on your script
```
~ghoffman/it116_test/ex12.sh
```
The script will prompt you for your Unix username.