So far, we have learned:
- How to create a list
- How to access, add, remove, and modify list elements
- How to create a two-dimensional list
- How to access and modify two-dimensional list elements
Let’s practice these skills.
-
Maria is entering customer data for her web store business. We’re going to help her organize her data.
Start by turning this list of customer first names into a list called first_names. Make sure to enter the names in this order:
- Ainsley
- Ben
- Chani
- Depak
-
Maria wants to track all customer’s preferred sizes for her clothing. Create a list called
preferred_size
.Fill our new list
preferred_size
with the following data, containing the preferred sizes for Ainsley, Ben, and Chani:["Small", "Large", "Medium"]
-
Oh no! We forgot to add Depak’s size.
Depak’s size is
"Medium"
. Use.append()
to add"Medium"
to thepreferred_size
list.Print
preferred_size
to see our change. -
Maria is having a hard time visualizing which customer is associated with each size. Let’s restructure our two lists into a two-dimensional list to help Maria.
In addition to our already available data, Maria is adding a third value for each customer that reflects if they want expedited shipping on their orders.
This will be reflected using a boolean value (
True
for expedited,False
for regular)Create a two-dimensional list called
customer_data
using the following table as a reference for the data. Each sublist should contain a name, size, and expedited shipping option for a single person.Name Size Expedited Shipping "Ainsley" "Small" True "Ben" "Large" False "Chani" "Medium" True "Depak" "Medium" False Print
customer_data
to see the data. -
"Chani" reached out to Maria. She requested to switch to regular shipping to save some money.
Change the data value for "Chani"‘s shipping preference to
False
in our two-dimensional list to reflect the change. -
"Ben" reached out to Maria asking to remove his shipping option (the
True
orFalse
value) because he is unsure what type he wants.Use the
.remove()
method to delete the shipping value from the sublist that contains Ben’s data.Note: We never explicitly went over how to use the
.remove()
method on a 2d list together. -
Great job making it this far! One last thing, Maria received new customers, "Amit" and "Karim", the following 2d list contains their data:
[["Amit", "Large", True], ["Karim", "X-Large", False]]
Create a new variable
customer_data_final
. Combine our existing listcustomer_data
with our new customer 2d list using + by adding it to the end ofcustomer_data
.Print
customer_data_final
to see our final result.