Python Collection Types
Python provides several built-in collection types to store and manage data efficiently, including lists, tuples, sets, and dictionaries. Each type has unique characteristics and is suited for different tasks, such as ordered sequences (lists, tuples), unordered collections of unique elements (sets), and key-value mappings (dictionaries). These collection types enable flexible and efficient data manipulation and are foundational to Python programming.
Python List
A Python list is a dynamic and ordered collection of elements that supports versatile operations like indexing, slicing, and modification of its contents. Lists are commonly used for storing and managing sequences of data in Python programs.
#Python Lists :-
#List is a collection which is ordered and changeable. Allows duplicate members.
mylist = ["apple", "banana", "cherry", "orange", "kiwi", "melon", "mango"]
#list length
print("Length : ",len(mylist))
#Get items
print("All values : ",mylist)
print("Single Item : ",mylist[1])
print("Negetive indexing : ",mylist[-1])
print("Range of values : ",mylist[2:5])
print("Range from beginning : ",mylist[:4])
print("Range to end : ",mylist[2:])
print("Negative range : ",mylist[-4:-1])
# change items
mylist[1] = "blackcurrant"
mylist[2:4] = ["jack fruit", "watermelon"]
print("After change : ",mylist)
#add items
mylist.append("blueberry")
mylist.insert(4, "pineapple")
print("After add : ",mylist)
#Remove items
mylist.remove("mango")
print("After remove : ",mylist)
#check item
print("Checking an item in list:")
if "apple" in mylist:
print("Yes, 'apple' is in the fruits list")
#Loop list
print("Print items using loop:")
for x in mylist:
print(x)