Datatype

Description

Is Immutable?

Example Int We can use to represent the whole/integral numbers Immutable >>> a=10 >>> type(a)

Float

We can use to represent the decimal/floating point numbers

Immutable

>>> b=10.5

>>> type(b)

Complex We can use to represent the complex numbers Immutable >>> c=10+5j >>> type(c) >>> c.real 10.0 >>> c.imag 5.0

Bool

We can use to represent the logical values (Only allowed values are True and False)

Immutable

>>> flag=True

>>> flag=False

>>> type(flag)

Str To represent sequence of Characters Immutable >>> s='durga' >>> type(s) >>> s="durga" >>> s='''Durga Software Solutions... Ameerpet''' >>> type(s)

bytes

To represent a sequence of byte values from 0-255

Immutable

>>> list=[1,2,3,4]

>>> b=bytes(list)

>>> type(b)

bytearray To represent a sequence of byte values from 0-255 Mutable >>> list=[10,20,30] >>> ba=bytearray(list) >>> type(ba)

range

To represent a range of values

Immutable

>>> r=range(10)

>>> r1=range(0,10)

>>> r2=range(0,10,2)

31 https://www.youtube.com/durgasoftware

list To represent an ordered collection of objects Mutable >>> l=[10,11,12,13,14,15] >>> type(l)

tuple

To represent an ordered collections of objects

Immutable

>>> t=(1,2,3,4,5)

>>> type(t)

set To represent an unordered collection of unique objects Mutable >>> s={1,2,3,4,5,6} >>> type(s)

frozenset

To represent an unordered collection of unique objects

Immutable

>>> s={11,2,3,'Durga',100,'Ramu'}

>>> fs=frozenset(s)

>>> type(fs)

dict To represent a group of key value pairs Mutable >>> d = {101:'durga', 102:'ramu', 103:'hari'} >>> type(d)

14) None Data Type:  None means nothing or No value associated.  If the value is not available, then to handle such type of cases None introduced.  It is something like null value in Java.

Eg: def m1(): a=10

print(m1()) None