1. Starting 1 Lets Learn Saenthong School, January February 2016 Teacher: Aj. Andrew Davison, CoE, PSU Hat Yai Campus A computer is a machine that stores data. A program is a set of instructions that tells a computer what to do with the data. 0. Computers and Programs 2 Why Learn to Program? Makes you a clever user of computers It's fun! You make stuff (programs) that do things Helps you learn problem solving skills Programmers get jobs 3 Why Learn Python? The Python programming language is aimed at beginners It's easy to learn and use Powerful Lots of program libraries Free Runs on everything Lots of users; lots of help online Used in the real world 1. Go to the Python webpage 2. Download version (or higher) 3. Wait a while... 4. Start Installer 5. Click PATH and press "Install Now" 6. Click "Close" at end 7. Check the Menu for Python 1. Installing Python on your PC 6 Python Webpageclick here 7 Python Download Page click here 8 Wait for Installer to Appear on your PC 9 Start Installer click here 10 Click PATH & Press "Install Now" 11 Setup in Progress 12 Press Close at End of Installer 13 Check the Menu for Python 14 There are lots of ways of starting Python 1.from the Python menu, start IDLE (a Python editor) 2.from the Python menu, start Python 3.start Python from the Windows command line (2) and (3) start the same Python 2. Starting Python 15 The easiest 2.1. Start IDLE (a Python editor) 16 Inside IDLE I typed help() and to start "help" I typed quit to leave "help" but still be in IDLE 17 Get Python to do Things I typed these and 18 Some Math Operations 19 and (... ) around the maths, if you want Some Maths to Try 20 Leaving IDLE and Python 21 22 Other Ways to Leave IDLE >>>exit() >>>quit() >>> CtrlD+ Any one of these 2.2. Start Python (but no editor) 23 Inside Python I typed help() and to start "help" I typed quit to leave "help" but still be in Python I typed ctrl-Z and to leave Python 24 Start Python from Windows Command Line Start Windows "Command Prompt" program 25 2.3. Start Python in the Command Window I typed python and to start "python" 26 Leaving Python in the Command Window I typed help() and to start "help" I typed quit to leave "help" but still be in Python I typed ctrl-Z and to leave Python but still be in the Command Window 27 3. Programming with Python in IDLE 28 29 1. Start IDLE 2. Create a new program file 3. Write a Python program into the file 4. Save the program file. give the file a name, e.g. test1 5. Check the file is on your PC 4. Writing a Python Program 30 Create a new Program File 31 Write a Program into the File 32 Save the program file 33 Type in a File name I'm saving the file as "test1" on the Desktop 34 Check the file is on your PC The file is called "test1.py" on the Desktop 35 Two ways: run your program inside IDLE run your program in the Command Window 5. Running your Program 36 5.1. Running your Program in IDLE 37 Open (Load) test1.py 38 Run the program using "Run Module" (F5) 39 Python Runs (Executes) your Program 40 5.2. Run from the Command Prompt I typed cd Desktop to move to the desktop I typed python test1.py to run the program This is the program running. 41 6. Python Documentation (docs) 42 Or from Help in IDLE 43 The First Doc Page 44