Objective: To practice writing Python code.
To start the lab: Download and unzip the file lab1.zip from
Part A: In the folder lab1, open the diceOutcomes.py program in IDLE. (Right-click on diceOutcomes.py | Edit
with IDLE) It contains a partial program we started to discuss in class to solve the problem:
“Write a program to roll two 6-sided dice 1,000 times to determine the percentage of each outcome (i.e., sum
of both dice). Report the outcome(s) with the highest percentage.”
I decided to functional-decomposition this problem as:
main
displayWelcome
calculateFrequentRolls
displayResults
rollAndTallyOutcomes findOutcomes
mostFrequentRolls
highestCount
mostFrequentRolls
highestCount
outcomeCounts
outcomeCounts
highestCount
outcomeCounts
max
mostFrequentRolls
highestCount
main - provides an outline of program by calling top-level functions
displayWelcome - Displays welcome message for the user
calculateFrequentRolls - Rolls the dice the correct number of times, tallies the outcomes, and returns a
list of outcomes with the highest count and highest count.
rollAndTallyOutcomes - Rolls the dice the correct number of times and tallies the outcomes. Returns a list
of tallies with the index being the outcome.
max - built-in function to return the largest item in an iterable data structure like a list.
findOutcomes - Returns a list of outcomes with the highest count.
displayResults - Displays the outcome(s) with the highest percentage.
Consider running the program with only 10 dice rolls instead of 1,000. The program output with some extra
debugging prints showing the two Python lists used: outcomeCounts and mostFrequentRolls.
This programs rolls two 6-sided dice 10 times to
determine the outcome(s) with the highest percentage.
outcomeCounts: [0, 0, 1, 0, 2, 1, 0, 3, 0, 0, 3, 0, 0]
mostFrequentRolls: [7, 10] and highestCount: 3
The highest percentage is 30.0 for outcome(s): 7 10
Your task for lab 1 is to complete the code for the rollAndTallyOutcomes and findOutcomes
functions.
After you have working code, raise your hand and demonstrate your code for me or the TA (Morgen).
If you complete all parts of the lab, nothing needs to be turned in for this lab. If you do not get done today,
then show me the completed lab in next week’s lab period. When done, remember save your program to a
USB drive (or email to yourself).
Data Structures (CS 1520) Lab 1 Name:___________________________
Lab 1 - 1
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