With Python you control your computer by using Python, a highly intuitive language!
0. Install Python language if you‘re on Windows, if it is not already installed.
1. Open Python (command line). (How? By running python or searching python.exe)
A command prompt appears.
Tradition, python2: Enter “print “Hello World!”” and press Enter. You will have on the screen:
>>> print "Hello World!" Hello World! >>> _
Python 3: Enter “print (“Hello world.”)” and press Enter/Return. You will have on the screen:
>>> Print ("Hello world.") Hello world. >>> _
2. Select “a = 3” and press Enter/Return. In the next prompt type “print a” (or “print (a)” with version 3). You will have on the screen:
>>> a = 3 >>> print a 3 >>> _
3. Enter these commands (be sure to change the print by adding brackets for the code to be compatible with version 3):
>>> a = 0 # Shift+Enter to jump to the next line >>> while (a<4): # opens a process (1), so ... ... a = a+1 # add an indentation (space) at the beginning to signify membership in the process 1. ... print "week" , a # application to display "week" and a. ... week 1 # 1st result week 2 week 3 week 4 # etc., your program runs in a loop until a<4
4. Open a text editor, write ...
a = 0 while (a <20): a = a + 1 print "week" , a , "2015"
... and save this script as *.py
5. Open your operating system's command line (eg: bash GNU/Linux, Mac OS X Terminal, or cmd for Windows), place the command prompt in the directory of your *.py file, display your *.py file in your command prompt and run it by pressing Enter.
Congratulations, you have written and performed your first script!
Translated from Wikibooks