Python list datatype

python list datatype:

list is a flexible, versatile, powerful, and popular built-in data type.

store multiple values in single variable and different datatypes

we can use list datatype in two ways

one is direct list variable

ex:

mylist=[10,20,40,50,90]

print(mylist)

second one is

list() constructor its class name

ex:

mylist=list([10,30,40,60,90])

print(mylist)

list heterogeneous items

heterogeneous means group of datatypes

Ex:

mylist = [10, 20, 'ram', 12.50, 'praveen', 25, 50]

print(mylist)

Comments

Python tuple packing and unpacking - Python coding

Python tuple packing and unpacking python tuple can also be created without using a tuple() class or enclosing the items inside the parentheses. it is called the variable packing #python tuple packing into tuple tuple=23,44,66,'django' print(tuple) print(type(tuple)) #unpacking tuple into variable a,b,c,d=tuple print("a is =",a) print("b is =",b) print("c is =",c) print("d is =",d) print(type(a)) print(type(b)) print(type(c)) print(type(d)) output : (23, 44, 66, 'django') <class 'tuple'> a is = 23 b is = 44 c is = 66 d is = django <class 'int'> <class 'int'> <class 'int'> <class 'str'>

Python tuples - tuple datatype in python

Python tuples - tuple datatype in python python tuples are ordered it can store variables of all types that are unchangeable creating tuple in two ways using parenthesis() A tuple is created by enclosing comma separated elements inside rounded brackets. python tuple characteristics: Ordered : tuples are part of sequence data types Unchangeable : tuple are unchangeble, we cannot add or delete element Heterogeneous : means different datatypes Create a tuple using the two ways: #Using parenthesis () tuple=(56,77,88,78,23) print(tuple) print(type(tuple)) output : (56,77,88,78,23) #Using a tuple() constructor x=tuple((56,88,99,34.77,83)) print(x) print(type(x)) output: ((56,88,99,34.77,83)) #Heterogeneous type tuple elements and nested tuple sampletuple = ('ram',44,45.65,[23,25, 78]) print(sampletuple) output: ('ram',44,45.65,[23,25, 78])

remove specific element in python list - remove index based element

#remove specific element in python list list=list([34,55,34,66,77,45.6,23,34,]) print(list) list.remove(66) print(list) output: [34, 55, 34, 66, 77, 45.6, 23, 34] [34, 55, 34, 77, 45.6, 23, 34] #Remove all occurrence of a specific python repeated element mylist = list([26, 4, 26, 26, 8, 12]) for item in mylist: mylist.remove(26) print(mylist) output : [4,8,12] #remove item present at given index mylist = list([2, 4, 6, 8, 10, 12]) mylist.pop(2) #remove 2 index based element print(mylist) output: [2, 4, 8, 10, 12] # remove item without passing index number(last value remove) using pop() mylist = list([2, 4, 6, 8, 10, 12]) mylist.pop() print(mylist) output : [2, 4, 6, 8, 10] [2, 4, 8, 10] #remove the range of elements python list with slice: mylist = list([2, 4, 6, 8, 10, 12]) #remove item from index 2 to 5 del mylist[2:5] print(mylist) output: [2, 4, 12] #remove all items starting from index 2 mylist=list([23,44,55,34,53,78,55]) del myl...

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