লিস্ট

fruits = ["apple", "banana", "mango"]
print(fruits[0])  # "apple"
print(fruits[2])  # "mango"
print(fruits[-1]) # "mango" — negative indexes count from the end

fruits = ["apple", "banana"]
fruits.append("mango")      # adds to the end
fruits[0] = "green apple"   # overwrites index 0
fruits.remove("banana")     # removes the first "banana" found
del fruits[0]                # removes by index instead

fruits = ["apple", "banana", "mango"]
for fruit in fruits:
    print(fruit)

# with the index too:
for index, fruit in enumerate(fruits):
    print(index, fruit)

numbers = [10, 20, 30, 40, 50]
print(numbers[1:3])  # [20, 30]
print(numbers[:2])   # [10, 20]
print(numbers[-2:])  # [40, 50]

original = [1, 2, 3]
alias = original
alias.append(4)
print(original)  # [1, 2, 3, 4] — original changed too, since it's the same list

original = [1, 2, 3]
copy = original.copy()
copy.append(4)
print(original)  # [1, 2, 3] — unaffected
print(copy)      # [1, 2, 3, 4]