डिप्लोमा इन ऑफिस मैनेजमेंट एण्ड अकाउटिंग

डिप्लोमा इन ऑफिस मैनेजमेंट एण्ड अकाउटिंग

Full Stack Web Development with Laravel

Full Stack Web Development with Laravel

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Affiliate Program

Python List

List is used to store multiple values. list is created using square bracket.
l = [10, 20, 30, 40, 50]

List indexing 

print(l[0]) # 10
print(l[1]) # 20

List splitting

print(l[0: 3]) # [10, 20, 30]

Change list item

l[0]= 100
print(l) # 100, 20, 30, 40, 50


List methods

count() Count number of elements of specified value
l=[1,2,3,1]
print(l.count(1)) # 2
append() Append new value to list
l=[1,2,3]
l.append(100)
print(l) # [1,2,3,100]
clear() Remove all elements from a list
l=[1,2,3]
l.clear()
print(l) # []
copy() Return copy of a list
x=[1,2,3]
y=x.copy()
print(y) # [1, 2,3]
extend() Add one list elements to other list
x=[1,2,3]
y=[100,200]
x.extend(y)
print(x) # [1,2,3, 100,200]
index() Return index of specified item from a list
x=[1,2,3]
print(x.index(1)) # 0
insert() Insert new item at specified index
x=[10, 20, 30]
x.insert(0, 100)
print(x) # [100, 10, 20, 30]
pop() Remove last item from a list
x=[10, 20, 30]
x.pop()
print(x) # [10, 20]
reverse() Reverse a list 
x=[1,2,3]
print(x) # [1,2,3]
x.reverse()
print(x) # [3,2,1]
remove() Remove the specified item from a list
x=[1,2,3]
x.remove(2)
print(x) # [1, 3]
sort() Sort list items in ascending or descending order
x=[1, 21, 3]
x.sort()
print(x) # [1, 3, 21]
x.sort(reverse=True)
print(x) # [21, 3, 1]
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