Data types
using we can different types of data stored in memory. For example, we can
stored employee name using alphanumeric character types and her age and id are numeric types. These all types of data stored
in python using data types.
Python
Provide Five Types Of Data Types Such As :
- Numbers
- String
- List
- Tuple
- Dictionary
Python
Numbers :
Python
numbers data types store numeric values. In python number data types in we have
use integer numbers, floating points numbers, and complex numbers.
Example
abc = 10
abc1 = 20.52
abc2 = 45.e
Here
example in we show first variable abc in we stored 10 numeric values, second
variable abc1 in we stored 20.52 floating point values and third variable abc2
in stored 45.e complex number, so we understand numbers data types in we can stored
integer, floating point and complex number.
Python
String :
String data
types in python represents text information in our python program. Strings in
python we can create using single quotes or double quotes. Anything within
quotes is a string in python.
Example
abc = ‘Hello world’
abc1 = “Hello
friends”
print abc
print abc1
Output
Hello world
Hello friends
Python
Lists :
Python in
list data type is mutable. This means that the elements in a list can be
changed after it is created. The list can contain mixed data types. List
contain items separated by commas and enclosed with in square brackets ([]).
List is
similar functionality of arrays in c language but small difference is array
stored same type of data and list is stored different data types.
List in
stored elements are access using the slice operator ( [ : ] ) with index position
start with 0.
Example
lst = [123, ‘abc’, 50.20, ‘xyz’]
print lst
print lst[0]
print [0:2]
print[1:]
Output
[123, ‘abc’,
50.20, ‘xyz’]
123
[123, ’abc’]
[ ‘abc’, 50.20, ‘xyz’]
Python
Tuples :
Python in
tuples is an immutable data types. A tuple consists of a number of values
separated by commas, like list. Tuples are enclosed with parentheses ( () ).
The difference
between tuples and list is :
- Tuples enclosed with parentheses ( () ) and list enclosed with in square brackets( [] ).
- Tuples is immutable type and list is mutable type of data types.
Example
tuple = ( 123, ‘abc’, 50.20, ‘xyz’, 286)
print tuple
print tuple [ 0 ]
print tuple [ 1 : 3 ]
print [ 2 : ]
Output
( 123, ‘abc’, 50.20, ‘xyz’, 286)
123
( ‘abc’, 50.20 )
( 50.20, ‘xyz’, 286 )
Python
Dictionary :
Python in
dictionary data types are kind of hash table type. Dictionary is a group of
key-value pairs. The elements in a dictionary are indexed by keys. Keys is unique
in dictionary data types.
Dictionaries
are enclosed by curly brackets ( { } ) and element of dictionary access using
square brackets ( [ ] ).
Example
dic = { }
dic [ ‘one’ ]
= “First Position”
dic [3] = “Third Position”
dict1 = { ‘ Name ’ :
‘ James ’, ‘ Pin ’: 385001, ‘ Designation ’: ‘ Engineers ’ }
print dic [ ‘ one ’
]
print dic [ 3 ]
print dict1
print dict1.keys()
print dict1.values()
Output
First Position
Third Position
{ ‘ Name ’ : ‘ James ’, ‘ Pin ’: 385001, ‘ Designation ’: ‘ Engineers ’ }
{ ‘ Designation ’, ‘ Pin ’, ‘ Name
’}
{ ‘ Engineers ’, 385001, ‘ James ’ }