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Message: <blockquote data-quote="gayan kalhara" data-source="post: 3253183" data-attributes="member: 60168">Part 1 IntroIntro    1.1 First things firstSo, I think you’ve never programmed before. As we go through this tutorial I will attempt to teach you how to program.There really is only one way to learn to program. You must read code and write code. I’m going to show you lots ofcode. You should type in code that I show you to see what happens. Play around with it and make changes. The worstthat can happen is that it won’t work. When I type in code it will be formatted like this:##Python is easy to learnprint "Hello, World!"That’s so it is easy to distinguish from the other text. To make it confusing I will also print what the computer outputsin that same font.Now, on to more important things. In order to program in Python you need the Python software. If you don’talready have the Python software go to <a href="http://www.python.org/download/" target="_blank">http://www.python.org/download/</a> and get the proper version for your platform.Download it, read the instructions and get it installed.1.2 Installing PythonFirst you need to download the appropriate file for your computer from <a href="http://www.python.org/download" target="_blank">http://www.python.org/download</a>. Go to the 2.5link (or newer) and then get the windows installer if you use Windows or the rpm or source if you use Unix.The Windows installer will download to file. The file can then be run by double clicking on the icon that is downloaded.The installation will then proceed.If you get the Unix source make sure you compile in the tk extension if you want to use IDLE.1.3 Interactive ModeGo into IDLE (also called the Python GUI). You should see a window that has some text like this:1Python 2.5 (#4, Dec 12 2007, 19:19:57)[GCC 2.95.2 20000220 (Debian GNU/Linux)] on linux2Type "copyright", "credits" or "license" for more information.IDLE 0.6 -- press F1 for help>>>The >>> is Python way of telling you that you are in interactive mode. In interactive mode what you type is immediatelyrun. Try typing 1+1 in. Python will respond with 2. Interactive mode allows you to test out and see what Pythonwill do. If you ever feel you need to play with new Python statements go into interactive mode and try them out.1.4 Creating and Running ProgramsGo into IDLE if you are not already. Go to File then New Window. In this window type the following:print "Hello, World!"First save the program. Go to File then Save. Save it as ‘hello.py’. (If you want you can save it to some otherdirectory than the default.) Now that it is saved it can be run.Next run the program by going to Edit then Run script. This will output Hello, World! on the*Python Shell* window.Confused still? Try this tutorial for IDLE at <a href="http://hkn.eecs.berkeley.edu/" target="_blank">http://hkn.eecs.berkeley.edu/</a> dyoo/python/idle intro/index.html1.5 Using Python from the command lineIf you don’t want to use Python from the command line, you don’t have too, just use IDLE. To get into interactivemode just type python with out any arguments. To run a program create it with a text editor (Emacs has a goodpython mode) and then run it with python program name.</blockquote>

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