PYTHON DICTIONARY

Comments

Data types

​Variables

If Else

If Elif Else

Functions

For loop

While loop

Data structures

String slicing

User defined function

Local/Global variable

Validation and Try

Methods

​File I/O

Pseudocode

Modules​

What is a Data type?

Numbers and letters are two types of data, but this isn't technical enough to get you marks on an exam paper. The data types you need to know are called:
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INTEGAR (written in Python as "int")
FLOAT (written in Python as "float")
BOOLEAN (written in Python as "bool")
STRING (written in Python as "str")

I know what they are called, but what are they exactly?

You now know the names of four data types, but what exactly are they?

INTEGAR: This is a number which does NOT have a decimal. It can be positive, negative or zero. e.g. 10, -273, 2001.
FLOAT: This is a number that contains a decimal point e.g. 3.141
BOOLEAN: A type of data that has one of two values e.g. True/False
STRING: A letter, number or character or a combination of e.g. "50% off"

Why have different data types?

When you start writing programs, you will want to be specific about what it does and how it handles your data. For example, many action games will contain "health" data or "number of lives" data. Which data type would you use to count how many lives you have left?

Python Challenge

In Python Shell, type the following then press enter
What does it do? Is it useful? Retry it with help(float), help(bool) and help(str)

Python Challenge

Name that data type. See if you can guess the type of data being displayed in the following variables
Superhero= "spiderman"
"Spiderman" is a string
FootballGamesUnbeaten = 38
38 is an integar
alive = true
True is a boolean
virginbroadband = 17.50
17.50 is a float