Week 5 Learning Summary

 Week 5 subject 1: Numbers (cont.)

• Floating point numbers are numbers with decimal points
• Floating point operations
• Same as integers
• % and // also works for floats!
• Type conversion from int to float
• Automatic and manual conversion with float()
• Never compare if floats are equal!

Week 5 subject 2: Lists

• List is a Python advance data type.
• There are list variables and list literals.
• List is an ordered set of objects, can be of different types.
• List elements can be accessed with subscripts (which makes Lists iterables), subscript ranges start at 0.
• You can have lists as elements of lists.  Note one data element is different from one list with only one data element.  Example: “abc” is different from [“abc”].
• Operating Lists: accessing elements with index,  .append(), del, .pop(), .remove() (note they have different syntax).
• Slicing: [begin:end:step], omitting begin or end, negative step