Welcome to programming!

Python

Lesson one :set up /IDLE interface/print / command

What is python?

• Python is a powerful object-oriented programming language that can be used in a wide variety of applications. Python is one of the family of 'P' languages widely used in web development, Python, Perl, PHP.

Examples of Python applications:• Web Development (CGI scripts, Content Management Systems) • Database Access • Desktop GUIs (windows)• Scientific and Numeric Computing • Low Level Network Programming • Software Development • Games and 3D Graphics

Lesson one-print and command

Today we are going to use the most basic of features print and command.

Print will put information on a page

Open up python

Go to your program tree Open up python 2.5Open up the IDLE(pythons GUI)

The reason that we are doing this is that we need to open up the user interface(GUI)

What the GUI looks like

This is where you type your programming into

This is also where you run your program

Setting up PythonWe are going to open up pythonYou should have selected IDLE to open up the user interfaceSave a python file to your documents making sure the end of the file is named .py

Save your python file as Test.py

Open up a new window

Go to file –new windowYour programming window will now open up

printType print command Print “this is a python string!”

Now press the f5 key to run your first programWhen you run your program it shows the results in your GUI

Lesson two-user input

Empty content of the previous program so it looks now like this What we are going to do is type in some new code, that will require an INPUT

Type in the following code:

You need to now run this program you have written by pressing f5

User input continued…

Once you have selected f5 it will prompt you to save.so save as user input.py

When you press f5 your program will open up in the interface and it will prompt you to enter a number

User input continued…..Now you have run your program it prompts you to enter a value in numbers

Enter your age then press enter-it will then tell you how old you are!

Conditional statements-if statement

“If age is bigger than 60 then print your are quite old”

Delete all previous code And type in the following code

Then press f5 to run it-save it as use of conditional statements.py

Your program once run will look like this

Using else statement

Delete your prior programs and type in the following program

Notice now we are using else as well as if

• When you type in an age above 60 you will get a message telling you ,you are old

• When you type in an age below 60 you will get a message telling you ,you are not that old

Looping…..

Open up IDLE-select file then new Type in the following codeThen press f5

This will then print the numbers 1-10

Looping cont….To extend this we are going to type in this additional code to create a second line of data

This printed one line of numbers 1-10

Now we are going to get python to print a second line of data

Looping…….

The result of this is…………..

Two sets of data

Change the number at the end of the code to 2 and see the effect

Looping…….

Now to get python to print squared numbers

Go to your previous window that looks like this….

Instead of the 0 type in o to get python to print squared numbers

This is what it looks like

Now you have a squared list of data

So –for ? In range(*enter parameter*) * what you want to be looped

Extension task-looping

This will create a list of data with next to each number description as to if it is odd or even

To see effect check next slide

What the lists look like

Now you can see the label

How to use functions in python

You need to type in the following code exactly ,and make sure that you have same spaces-EXACTLY

EXPLANATION:YOU NEED TO DEFINE THE NUMBER YOU ARE GOING TO SQUARE=X

Project 1-pass word reminder

You are now going to create a program to make sure that you create a program and that the password you have selected