list

a=[4,3,2,]
type(a)
a[0]
4
a[-1]
2
#
l=[11,22,33,44,55,66,77]

l[2:5:1]
[33, 44, 55]
#
l=[1,2,43,4,5,4,3,2,1]
l
[1, 2, 43, 4, 5, 4, 3, 2, 1]
#
a=[“programming”,”java”,”html”]
a[0]=”python”
a
[‘python’, ‘java’, ‘html’]
#
x=[1,2,4.5,67+43j,True,None,”Hello”]
type(x)

list

a=list([33,44,55,66])
type(a)
a=list({33,44,55,66})
type(a)

list method

list1=[100,200,300]

append()

list1.append(400)
list1
[100, 200, 300, 400]
list1.append(“Python”)
list1
[100, 200, 300, 400, ‘Python’]
#

insert

list1
[100, 200, 300, 400, ‘Python’]
list1.insert(2,1000)
list1
[100, 200, 1000, 300, 400, ‘Python’]

copy

a=[“python”,”java”,”c++”]
b=a.copy()
b
[‘python’, ‘java’, ‘c++’]
a
[‘python’, ‘java’, ‘c++’]
#
c=a
c
[‘python’, ‘java’, ‘c++’]
a
[‘python’, ‘java’, ‘c++’]
a[0]=”php”
a
[‘php’, ‘java’, ‘c++’]
c
[‘php’, ‘java’, ‘c++’]
b
[‘python’, ‘java’, ‘c++’]

clear

a=[11,22,33,4]
a
[11, 22, 33, 4]
a.clear()
a
[]

remove

a=[11,22,33,44]
a.remove(22)
a
[11, 33, 44]
#

pop

a=”Rajesh”,”mahesh”,”Karan”,”Sohil”]
SyntaxError: unmatched ‘]’
a=[“Rajesh”,”mahesh”,”Karan”,”Sohil”]
a.pop()
‘Sohil’
a
[‘Rajesh’, ‘mahesh’, ‘Karan’]
a.pop(1)
‘mahesh’
a
[‘Rajesh’, ‘Karan’]
#
a=[1,11,223,44,445,66]
a.count(11)
1

Count

a=[11,22,22,33,22,11,11,11,1,11]
a.count(11)
5
a.count(1)
1
x=[True,”false”,”None”,432,42.143]
x.extend([11,22,33])
x
[True, ‘false’, ‘None’, 432, 42.143, 11, 22, 33]
x.index(432)
3

reverse

a=[11,22,33,44,55,66,76]
a.reverse()
a

sort

[76, 66, 55, 44, 33, 22, 11]
a.sort()
a
[11, 22, 33, 44, 55, 66, 76]
x=[11,22,3,45,78,6,43,1]
x.sort()
x
[1, 3, 6, 11, 22, 43, 45, 78]
x=[11,22,3,45,78,6,43,1]
x.sort(reverse=True)
x
[78, 45, 43, 22, 11, 6, 3, 1]
a

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