PYTHON_101 | VALUES & VARIABLES TYPES
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PYTHON_101 | VALUES & VARIABLES TYPES
Programs often need to work with numbers and text, adding and subtracting, asking questions and processing answers.
Python is able to label different types of values so that it can make different commands available to us.
The different types of values are listed below:
| Value Types | Description | Example |
|---|---|---|
integer |
A whole number, which can be positive or negative | 1, 2, 3, 4, -500, 1000 |
float |
A decimal number, which can be positive or negative | 3.14, -2.5, 1.66666 |
string |
A line of text | 'hello world', 'my name is Kevin' |
list |
A collection of words or numbers, or objects | [‘cat’,’dog’,’fish’,’gecko’], or [1,2,3,5,8,13,21] |
dict |
A dictionary - a list, with pairs of values | {‘name’:’Kevin’, ‘address’:’UK’, ‘age’:45} |
object |
An instance of a class (we’ll cover this in a later session) | Object of 'Cat' Class |
When we assign a value to a variable, it is said to have the a type. e.g.
a = 1
b = 2.1
c = "hello"
In this example a contains the value 1 and is of type integer, b contains the value 2.1 and is of type float (because it has a decimal point), and c contains hello and is of type string because it contains a text wrapped inside some speech marks.