Midterm Recap

Stats & Solutions

Is there at least ONE thing you understand better now from taking the midterm? If so — you’ve succeeded, regardless of your score.

Average Score per Question:
 #1. Greet by Name | 6.2 (A)
 #2. Total + Tax   | 6.7 (A)
 #3. Greet by Time | 5   (B)
 #4. Password Loop | 4.4 (C)
 #5. Twitter Bot   | 3.1 (C)
___________________________
Overall Class Average: 5 (B)

#1. Greet by Name

Write a program that:

• asks the name of the user
• greets the user by name — IN ALL CAPITAL LETTERS.

# example by Fernanda
name = input("What's your name? ")
nameUPPERCASE = name.upper()
print("HELLO " + nameUPPERCASE + "!!!")

#2. Total + Tax

Write a program that:

• asks the user for the subtotal (price before tax)
• asks the user for the current tax rate (in decimal form)
• calculates the total price with tax

# example by Joey
price = float(input("what is price before tax"))
tax = float(input("what is current tax rate"))
total = price + (price * tax)
print("the total price is: " + str(total))

#3. Greet by Time

Write a program that:

• asks for the current hour (in military time, 0–23)
• prints a greeting, according to this algorithm:

HOUR | GREETING
7–11 | Good morning
12–16 | Good afternoon
17–23 | Good evening
0–3 | Go to bed!
4–6 | You’re up early
Any other number (including 24) is invalid

# example by Lidia
hour = int(input("Enter the hour (in military time): "))
if hour >= 7 and hour <= 11:
  print("Good morning")
elif hour >= 12 and hour <= 16:
  print("Good afternoon")
elif hour >= 17 and hour <= 23:
  print("Good evening")
elif hour >= 0 and hour <= 3:
  print("Go to bed!")
elif hour >= 4 and hour <= 6:
  print("Youre up early")
else:
  print("invalid input")

#4. Password Loop

Write a program that:

• keeps asking the user for the password ("p@ssw0rd%"), until they get it right
• prints a message whenever they get it wrong
• prints a different message when they get it right

# example by Arthur
password = "p@ssw0rd%"
x = ''
while x != password :
  
  x = input("please enter your password")
  
  if x == ("p@ssw0rd%"):  # should use password variable here
    print("access granted")
  
  else :
    print("access denied")

#5. Twitter Bot

Write a program that

• takes text as input
• checks how many characters there are
• says whether or not it can be posted to Twitter, which has a 280 character limit

# example by Ryan
str = input("Enter text. ")
if len(str) <= 280 :
  print("OK to post. ")
else :
  print("Too long to post. ")
# for best practices, the variable should be called something other than str, because someone might confuse it with the function str()

Extra Credit Opportunity

I sent back all problems that scored less than 4 points. For extra credit, comment out the code you wrote and then just type in the correct example. Type it, don’t copy/paste! And make sure to include the comment about who wrote it. Do the same for any problems you didn’t submit — just type it in, and give proper credit. The goal of this is to help you better understand the solutions through muscle memory.