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‎Ch03/3-1-3.py

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list1 = [6, 4, -5, 3.5]
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list1.sort()
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print(list1)
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list2 = ["ha", "hi", "B", "7"]
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list2.sort()
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print(list2)

‎Ch03/3-1-4.py

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list1 = [chr(177), "cat", "car", "Dog", "dog", "8-ball", "5" + chr(162)]
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list1.sort()
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print(list1)

‎Ch03/3-1-5.py

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monarchs = [("George", 5), ("Elizabeth", 2), ("George", 6), ("Elizabeth", 1)]
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monarchs.sort()
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print(monarchs)

‎Ch03/3-2-1.py

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## Determine the larger of two numbers.
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# Obtain the two numbers from the user.
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num1 = eval(input("Enter the first number: "))
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num2 = eval(input("Enter the second number: "))
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# Determine and display the larger value.
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if num1 > num2:
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largestValue = num1 # execute this statement if the condition is true
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else:
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largestValue = num2 # execute this statement if the condition is false
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print("The larger value is", str(largestValue) + ".")

‎Ch03/3-2-10.py

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## Illustrate Boolean values.
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if 7:
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print("A nonzero number is true.")
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else:
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print("The number zero is false.")
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if []:
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print("A nonempty list is true.")
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else:
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print("An empty list is false.")
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if ["spam"]:
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print("A nonempty list is true.")
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else:
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print("The empty list is false.")

‎Ch03/3-2-2.py

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## A quiz.
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# Obtain answer to question.
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answer = eval(input("How many gallons does a ten-gallon hat hold? "))
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# Evaluate answer.
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if 0.5 <= answer <= 1:
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print("Good, ", end="")
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else:
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print("No, ", end="")
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print("it holds about 3/4 of a gallon.")

‎Ch03/3-2-3.py

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## Find the largest of three numbers.
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# Input the three numbers.
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firstNumber = eval(input("Enter first number: "))
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secondNumber = eval(input("Enter second number: "))
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thirdNumber = eval(input("Enter third number: "))
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# Determine and display the largest value.
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max = firstNumber
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if secondNumber > max:
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max = secondNumber
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if thirdNumber > max:
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max = thirdNumber
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print("The largest number is", str(max) + ".")

‎Ch03/3-2-4.py

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## Interpret weather beacon.
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# Get color and mode.
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color = input("Enter the color (BLUE or RED): ")
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mode = input("Enter the mode (STEADY or FLASHING): ")
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color = color.upper()
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mode = mode.upper()
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result = ""
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# Analyze responses and display weather forecast.
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if color == "BLUE":
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if mode == "STEADY":
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result = "Clear View."
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else: # mode is FLASHING
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result = "Clouds Due."
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else: # color is RED
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if mode == "STEADY":
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result = "Rain Ahead."
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else: # mode is FLASHING
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result = "Snow Ahead."
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print("The weather forecast is", result)

‎Ch03/3-2-5.py

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## Evaluate profit.
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# Obtain input from user.
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costs = eval(input("Enter total costs: "))
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revenue = eval(input("Enter total revenue: "))
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# Determine and display profit or loss.
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if costs == revenue:
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result = "Break even."
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else:
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if costs < revenue:
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profit = revenue - costs
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result = "Profit is ${0:,.2f}.".format(profit)
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else:
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loss = costs - revenue
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result = "Loss is ${0:,.2f}.".format(loss)
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print(result)

‎Ch03/3-2-6.py

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## Determine the larger of two numbers.
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# Get the two numbers from the user.
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num1 = eval(input("Enter the first number: "))
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num2 = eval(input("Enter the second number: "))
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# Determine and display the larger value.
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if num1 > num2:
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print("The larger value is", str(num1) + ".")
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elif num2 > num1:
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print("The larger value is", str(num2) + ".")
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else:
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print("The two values are equal.")

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