Python offers many built-in functions and methods for list manipulation. Here are some methods of the built-in list class that help in modifying lists.

• index()– This function returns the index of first matched item from the list.
  syntax:-

list_name.index(element)

e.g.,

l=[8, 12, 18, 22, 24, 30]
l.index(18)

Output- 2

• append()– This function is used to add an element to the list at the end.
  syntax:-

list_name.append(new_element)

e.g.,

l=[1, 2, 3, 4, 5]
l.append(6)
print(l)

Output- [1,2,3,4,5,6]

• extend()– This method is used to add multiple elements to a list.
  syntax:-

list_name.extend(list to add)

e.g.,

l=[1,2,3,4,5]
l1=[6,7,8]
l.extend(l1)
print(l)

Output- [1,2,3,4,5,6,7,8]

• insert()- The insert method is an insertion method for lists.
  syntax:-

list.insert(index_number, element)

e.g.,

l=[1,2,3,4,5,6]
l.insert(2,7)
print(l)

Output- [1,2,7,3,4,5,6]

• pop()- It is used to remove the last element of the list. If the index is provided, then it will remove the element at the particular index.
  syntax:-

list.pop()

e.g.,

l=[1,2,3,4,5,6,7,8]
l.pop()
print(l)

Output- 
8
[1,2,3,4,5,6,7]

• reverse()-It is used to reverse the order of items in a list.
  syntax:-

list.reverse()

e.g.,

l=[1,2,3,4,5,6,7,8,9]
l.reverse()
print(l)

Output- l=[9,8,7,6,5,4,3,2,1]

This is all about methods and function in list in python.