Python Basics- Lists

List is one of the most important data structure in Python. you can find details here -  data structure in Python

In this tutorial we will see some useful operations-creating/updating/removing a list that occurs in a life of data scientist.

Store the values 'python', 'c', and 'java' in a list. Print each of these values out, using their position in the list.

Here we can also use print(myList[0],myList[1],myList[2]) in a line

Note: The indexing starts here with 0 not from the 1 from left to right and from right to left it starts with -1.

Working List:-

• Make a list that includes four careers, such as 'programmer' and 'truck driver'.
• Use the list.index() function to find the index of one career in your list.
• Use the in function to show that this career is in your list.
• Use the append() function to add a new career to your list.
• Use the insert() function to add a new career at the beginning of the list.
• Use a loop to show all the careers in your list.

Ordered Working List:-

Start with the list you created in Working List.

• You are going to print out the list in a number of different orders.
• Each time you print the list, use a for loop rather than printing the raw list.
• Print a message each time telling us what order we should see the list in.
• Print the list in its original order.
• Print the list in alphabetical order.
• Print the list in reverse alphabetical order.
• Print the list in the reverse order from what it started.
• Permanently sort the list in alphabetical order, and then print it out.
• Permanently sort the list in reverse alphabetical order, and then print it out.

Ordered Numbers:-

• Make a list of 5 numbers, in a random order.
• You are going to print out the list in a number of different orders.
• Each time you print the list, use a for loop rather than printing the raw list.
• Print a message each time telling us what order we should see the list in.
• Print the numbers in the original order.
• Print the numbers in increasing order.
• Print the numbers in decreasing order.
• Print the numbers in the reverse order from how they started.
• Permanently sort the numbers in increasing order, and then print them out.
• Permanently sort the numbers in decreasing order, and then print them out.

Getting List Length:-

So keep practicing by your own with above examples in your notebook and comment if you face any issue.