🐍 Core Python Commands (with Explanation)

🐍 Core Python Commands (with Explanation)

🔹 Create a List

my_list = ["item1", "item2"]

➡️ A list is used to store multiple items in one variable.

➡ Items are written inside square brackets [ ] and separated by commas.

🔹 Add an Element to a List

my_list.append("new_item")

➡️ The append() function adds a new item to the end of the list.

➡ The original list will be updated.

🔹 Remove an Element (by value)

my_list.remove("item2")

➡️ The remove() function deletes an item from the list.

➡ It removes the first matching value it finds.

🔹 Print Output

print("Hello, world!")

➡️ print() is used to display output on the screen.

➡ It is useful for showing results or messages.

🔹 Write a Comment

# This is a comment

➡️ Comments are notes written for humans to read.

➡ Python ignores comments when running the code.

🔹 Get Length of List or String

length = len(my_list)

➡️ len() tells you how many items are in a list

➡ It can also count the number of characters in a string.

🔹 Traverse a List (Loop)

for item in my_list:
    print(item)

➡️ A loop goes through each item in the list one by one.

➡ This is useful when you want to perform the same action for every item.