Sep 25: Quiz2, while loops and random

Learning Objectives

After today's class, you should be able to:

• Identify the three main components of a while loop
• Use the random module to generate random numbers

Reminders

• Read Week 6 Reading and Activities – ideally:
  • 1st half before Friday
  • 2nd half before Monday
• Submit HW 6 – ideally:
  • 1 and 2 before Friday
  • 3 and 4 before Monday

HW5 Debrief

• Identity vs equality (is vs ==)
• Helper functions (Ex: swap())
• Passing containers to functions
  • If immutable, return new object
  • If mutable, edit existing object
• Returning "fairness" of two sets

The Unofficial Graduation Requirement for CS/IT Majors

Students who write code like this will not be allowed to graduate:

if condition:
    return True
else:
    return False

The above code should be written without using an if statement:

return condition

Quiz 2

• Two portions to the quiz: written and coding
• Log in as student
• Start exam recording
• Log in to Canvas only
• Raise your hand when complete with Canvas written portion
• Open Thonny for coding portion only
• Submit code through Canvas (will go to Gradescope)
• Log out when finished

POGIL Activity

• While Loops
  • If you are absent today, complete this activity at home
  • Bring your completed activity to class or office hours

Example Code

Model 1

i = 0
while i < 3:
    print("the number is", i)
    i = i + 1
print("goodbye")

Question 9

total = 0
count = 0

n = None
while n != 0:
    n = float(input("Next number: "))
    total += n
    count += 1

print()
print("Total:", total)
print("Count:", count)