Computer Science: Python

Computer Science: Python

1. Printing

   • Printing is one of the most basic commands in python because all you need to know about this command is print as this example will show you ("Hello, My name is Steve")

2. Loops

   • Loops are fun because they sometimes never end like this code
     • x = 1 while True: print "To infinity and beyond! We're getting close, on %d now!" % (x) x += 1

3. Values

   • True, False and None
     • These are singletons (

4. Maths

   • Icons for math
     • Multiply = *, Divide = /, Addition = + and subtract = -
   • Maths can be helped by anything in python to a simple calculation to needing in own-made games

5. Functions

6. Accessing Values in Strings

   • What is a string?
     • Strings are derived data types. A string in Python is a sequence of characters. Strings are immutable. This means that once defined, they cannot be changed. (Unless you edit them)
   • Strings use square brackets ( [ ] ) to enclose the code like this example below
     • print "var1[0]: ", var1[0] print "var2[1:5]: ", var2[1:5]

7. Shell

   • Shell is the main coding interface which has automatic code giving it a trouble to make a bigger code without interference
   • Pressing Ctrl + N opens a new window helping people make a big code then saving to see it in action