Page 116 - Computer Genius Class 08
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Data Types
ata types are the classification or categorisation of data items. It represents the kind of value that
tells what operations can be performed on a particular data.
Python Data Types
Numeric Dictionary Boolean Set Sequence Type
Integer Float Complex No. Strings List Tuple
Name Type Description
Integers int Whole numbers, such as: –2 3 300 200
Floating point float Numbers with a decimal point: 2.3 4.6 100.0
Strings str Ordered sequence of characters: "hello" 'Sammy' "2000"
Lists list Ordered sequence of objects: [10, "hello", 200.3]
Dictionaries dict Unordered Key: value pairs: ("mykey" : "value", "name" : "Frankie")
Tuples tup Ordered immutable sequence of objects: (10, "hello", 200.3)
Sets set Unordered collection of unique objects: ("a","b")
Booleans bool Logical value indicating True or False
Variables
A variable is a named location which is used to store data in the memory. It is helpful to think of
variables as a container that holds data which can be changed later through programming.
Python is called dynamic typing language, as variables can be defined at the runtime also. ariables
can be declared at the time of assignment.
Example:
a= 10
b= 2.1
c= 'N'
d= "Hello World"
Here, we have created four variables named a, b, c and d assigned
with the values 10, 2.1, 'N', "HelloWorld" respectively. You can
think variable as a container to store things and those things can
be replaced at any time.
Example:
a=10
a=20 Rules for naming variables
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