list python methods
list.append(x) # append x to end of list
list.extend(iterable) # append all elements of iterable to list
list.insert(i, x) # insert x at index i
list.remove(x) # remove first occurance of x from list
list.pop([i]) # pop element at index i (defaults to end of list)
list.clear() # delete all elements from the list
list.index(x[, start[, end]]) # return index of element x
list.count(x) # return number of occurances of x in list
list.reverse() # reverse elements of list in-place (no return)
list.sort(key=None, reverse=False) # sort list in-place
list.copy() # return a shallow copy of the list
#Objects can also contain methods. Methods in objects are functions that belong to the object.
#Let us create a method in the Person class:
class Person:
def __init__(self, name, age):
self.name = name
self.age = age
def myfunc(self): # This is a method
print("Hello my name is " + self.name)
p1 = Person("John", 36)
p1.myfunc()
Lists in Python can be created by just placing the sequence inside the square brackets[]. Unlike Sets, list doesn’t need a built-in function for creation of list.
Note – Unlike Sets, list may contain mutable elements.
# Python program to demonstrate
# Creation of List
# Creating a List
List = []
print("Blank List: ")
print(List)
# Creating a List of numbers
List = [10, 20, 14]
print("\nList of numbers: ")
print(List)
# Creating a List of strings and accessing
# using index
List = ["Geeks", "For", "Geeks"]
print("\nList Items: ")
print(List[0])
print(List[2])
# Creating a Multi-Dimensional List
# (By Nesting a list inside a List)
List = [['Geeks', 'For'] , ['Geeks']]
print("\nMulti-Dimensional List: ")
print(List)
Output:
Blank List:
[]
List of numbers:
[10, 20, 14]
List Items
Geeks
Geeks
Multi-Dimensional List:
[['Geeks', 'For'], ['Geeks']]
