IB Computer Science 1

Monday (2/29/16)

Agenda:

• Python Test - Friday (3/4/16)
  • Variables, values, types
  • Conditionals (if), comparison, logic operators
  • Iteration (looping - while, for)
  • Strings
  • Lists
• Demo Benford's Law Assignment
• Introduction to Processing - Python Mode

Tuesday - Thursday (2/23/16 - 2/25/16)

Agenda:

• File I/O review
• Demo any missing assignments
• Benford's Law Assignment
  1. Create a text file that contains a list of 1000 numbers from a naturally occurring data set
     • If you cannot find one, try to getting ideas from:
       • Testing Benford's Law
       • U.S. Government's Open Data
       • U.S. Census Bureau
  2. Write a python program that reads the file, extracts the first digit of every number, and determines the frequencies of 1-9
  3. Print out the frequencies (percentages) of the numbers 1 through 9

Wednesday - Friday (2/17/16 - 2/19/16)

Agenda:

• Introduction to File Reading & Writing (Input & Output)
  1. Assume you have a single string containing the entire U.S. Constitution. Calculate and print out the frequency of the word "the"
     • Download the following file: Media:Constitution.txt
     • Hint: There is a useful string function that converts a string to a list of words.
  2. Write a program that generates a textfile with 10000 random numbers from 0-100
  3. Assume you have a single data file with 10000 random numbers from 0 to 100. Print out the frequency of each of the numbers.
  4. Assume you have a list of strings of peoples' full names in random order. Print out an alphabetized list of only the last names.

• Example code to help read in a file:

# open a text file
file = open("Constitution.txt", "r")

# read all lines in the file and save in the constitution string variable
constitutionStr = file.read()

# close the file
file.close()

print(constitutionStr)

• Example code to help write to a file:

# open a text file
file = open("output.txt", "w")

# read all lines in the file and save in the constitution string variable
file.write("Hello!\n")
file.write("world!")

# close the file
file.close()

Wednesday - Friday (2/10/16 - 2/12/16)

Agenda:

• Complete Advanced Python List Exercises
• Benford's Law
  1. Read and watch Benford's Law and Fraud Detection
  2. Further reading Benford's Law
  3. Research and find a set of naturally occurring numbers. Here are some ideas, but you can come up with your own:
     • Testing Benford's Law
     • U.S. Government's Open Data
     • U.S. Census Bureau
     • Heights of mountains
     • Atomic weights in the periodic table
     • Baseball statistics
     • etc.
  4. Create a text file that contains a list of your numbers (try to have a list of 1000 numbers if possible)

Monday (2/8/16)

Warmup:

1. Given numList = [9, 6, 3, 1, 3, 6, 8]
2. Use a for loop to print out half of each element

1. Given strList = ["Arlington", "Fairfax", "Falls Church", "Alexandria"]
2. Use a for loop to print out the first letter of each element

Agenda:

• CRFs & CS Courses
• Complete Advanced Python List Exercises

Thursday (2/4/16)

Warmup:

1. Given the following list: warmupList = [1, 3, 5, 2, 4, 6]
2. Swap the first and last elements in warmupList (you should use a temp variable)
3. Be sure to make it so that your code works for ANY list (i.e. any numbers in the list)

Agenda:

• CRFs & CS Courses
• Complete Advanced Python List Exercises

Tuesday (2/2/16)

• StudentVUE has been updated
  • You have until tomorrow to demo missing assignments
  • If you are turning in a missing assignment, you MUST show it to Mr. Bui in person
• Group 4 Projects
  • DUE TODAY
  • Submit video via Google Classroom
  • Submit hard-copy cover sheets and peer assessments to your teachers
• IB candidate session numbers
  • http://www.washlee.net/ib
  • Sophomores and Juniors who are *not* taking exams this year do not have numbers (leave that field on the cover sheet blank)
• Complete Advanced Python List Exercises

Archives

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• IBCS1 - 1516 - October
• IBCS1 - 1516 - September