✅ Creating Lists

my_list = [1, 2, 3, 4]
empty_list = []
mixed_list = [1, "hello", 3.14, True]

➕ Adding Elements

my_list.append(5)          # Add to end
my_list.insert(2, 99)      # Insert at index 2
my_list.extend([6, 7])     # Add multiple elements

➖ Removing Elements

my_list.remove(3)          # Remove first occurrence of value
my_list.pop()              # Remove last item
my_list.pop(1)             # Remove item at index 1
del my_list[0]             # Delete item at index 0
my_list.clear()            # Remove all items

🔁 Accessing Items

my_list[0]                 # First item
my_list[-1]                # Last item
my_list[1:3]               # Slice (index 1 to 2)

🔄 Looping Through Lists

for item in my_list:
    print(item)
for index, item in enumerate(my_list):
print(index, item)

🔍 Searching / Checking

3 in my_list               # Check existence
my_list.index(3)           # Index of value
my_list.count(3)           # Count occurrences

🧹 Sorting and Reversing

my_list.sort()             # Sort in place
my_list.sort(reverse=True) # Descending order
sorted_list = sorted(my_list)  # Return a sorted copy
my_list.reverse()          # Reverse list

🛠 Useful Functions

len(my_list)               # Length
min(my_list)               # Minimum value
max(my_list)               # Maximum value
sum(my_list)               # Sum of elements

🧱 List Comprehension

squares = [x**2 for x in range(5)]  # [0, 1, 4, 9, 16]
evens = [x for x in my_list if x % 2 == 0]

🔗 Joining & Splitting

joined = " ".join(["Hello", "World"])  # "Hello World"
split_list = "a,b,c".split(",")        # ['a', 'b', 'c']

🧪 Copying Lists

new_list = my_list.copy()
new_list = my_list[:]       # Another way to copy