Compsci 101, Fall 2014, Lab 9

Part 1: Top 1000/.csv

1. What do you see?

2. What are the differences when you say to show 200 words instead of 50?

3. Purpose of parameters delimeter and quotechar:

4. Purpose of d[artist] = []?

5. Explain the purpose both in terms of what the list comprehension below does and in how it fits with the other lines/list comprehensions in determining the top 30 artists.

      tosort = [(len(t[1]),t[0]) for t in info]
   
   
   
   
   
   
   
   
   

   What's the purpose of the slice info[-30:]?
   What are the top 5 artists?

   Part 2: SpeedDial

6. Answer for first paper-pencil problem:

7. Total number of key-presses with no speed-dial: total = sum([ ])
8. Number of key-presses saved when a six-digit number is dialed 12 times and the number is put in a speed-dial slot? Why?

9. List with save[i] being key-presses saved: saved =
10. Which numbers go in speed-dial slots?

11. Creating code for saved_presses: saved_presses =
12. Last steps to solve APT:

    Part 3: MemberCheck

13. What are the contents (words) of cheat1?

14. Three (two more) list variables

15. Based on previous variables:

       return sorted(                                                       )
    

    Part 4: Customer Statistics

16. Unique, sorted names on one line:

17. Finished APT on paper.