1 Dimensional Arrays

To loop through a Python list (also known as traversing a list/array), you can use various types of loops, such as the for loop or the while loop. Here's how to do it using the for loop:

# Using a for loop to iterate through a list (array)
my_list = [10, 20, 30, 40, 50]
# Method 1: Using range and len
for i in range(len(my_list)):
    print(my_list[i])
# Method 2: Using direct iteration
for item in my_list:
    print(item)

You can search for the index of an item in a list:

# Searching for an element in a Python list and printing its index
# Sample list
my_list = [10, 20, 30, 40, 50]
# Search value
search_value = 30
# Using the index() method
if search_value in my_list:
    index = my_list.index(search_value)
    print(f"{search_value} found at index {index}.")
else:
    print(f"{search_value} not found in the list.")

You can add and remove items from a Python list using various built-in methods. Here's how you can do it:

Append:

Adds an item to the end of the list.

my_list = [10, 20, 30]
my_list.append(40)
print(my_list)  # Output: [10, 20, 30, 40]

Insert:

Inserts an item at a specific index.

my_list = [10, 20, 30]
my_list.insert(1, 15)
print(my_list)  # Output: [10, 15, 20, 30]

Extend:

Appends elements from another iterable to the end of the list.

my_list = [10, 20, 30]
my_list.extend([40, 50])
print(my_list)  # Output: [10, 20, 30, 40, 50]

Remove: Removes the first occurrence of a specific value.

my_list = [10, 20, 30, 20, 40]

my_list.remove(20)

print(my_list)  # Output: [10, 30, 20, 40]

Pop: Removes and returns the item at a specific index.

my_list = [10, 20, 30, 40]

removed_item = my_list.pop(1)

print(removed_item)  # Output: 20

print(my_list)       # Output: [10, 30, 40]