Added lists code

lists/exciseTax01.py

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+
+message01 = '''
+Mass Excise Tax Fees
+====================
+
+The tax depends on the vehicle age. For this program we only calculate the
+excise tax on the first year of purchase.
+https://www.sec.state.ma.us/divisions/cis/tax/motor-excise.htm
+
+Vehicle Age	Percentage of List Price
+In the year preceding the model year
+(brand new car released before model year)	50%
+In the model year	90%
+In the second year	60%
+In the third year	40%
+In the fourth year	25%
+In the fifth and succeeding years	10%
+'''
+print(message01)
+# Tax table for excise tax by year.
+exciseTaxRateTable = [.5, .9, .6, .4, .25, .10, .10, .10, .10, .10]
+year = -1 # Indicates a date prior to the model year; i.e you bought a model year 2024 in year 2023.
+for exciseTaxRate in exciseTaxRateTable:
+    print(f"{year:2d}  {exciseTaxRate:.2f} {exciseTaxRate:.0%}")
+    year += 1  # Shorthand for year = year + 1
+
+print("Access excise tax rate by index")
+

lists/exciseTax02.py

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+
+message01 = '''
+Mass Excise Tax Fees
+====================
+
+The tax depends on the vehicle age. For this program we only calculate the
+excise tax on the first year of purchase.
+https://www.sec.state.ma.us/divisions/cis/tax/motor-excise.htm
+
+Vehicle Age	Percentage of List Price
+In the year preceding the model year
+(brand new car released before model year)	50%
+In the model year	90%
+In the second year	60%
+In the third year	40%
+In the fourth year	25%
+In the fifth and succeeding years	10%
+'''
+print(message01)
+# Tax table for excise tax by year.
+exciseTaxRateTable = [.5, .9, .6, .4, .25, .10, .10, .10, .10, .10]
+
+print("Access excise tax rate by index")
+yearIndex = 2
+print(f"year = {yearIndex}  rate = {exciseTaxRateTable[yearIndex]}")
+
+yearIndex = 4
+print(f"year = {yearIndex}  rate = {exciseTaxRateTable[yearIndex]}")
+
+yearIndex = 7 # set to 9 or more and the program will fault
+print(f"year = {yearIndex}  rate = {exciseTaxRateTable[yearIndex]}")

lists/exciseTax03.py

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+
+message01 = '''
+Mass Excise Tax Fees
+====================
+
+The tax depends on the vehicle age. For this program we only calculate the
+excise tax on the first year of purchase.
+https://www.sec.state.ma.us/divisions/cis/tax/motor-excise.htm
+
+Vehicle Age	Percentage of List Price
+In the year preceding the model year
+(brand new car released before model year)	50%
+In the model year	90%
+In the second year	60%
+In the third year	40%
+In the fourth year	25%
+In the fifth and succeeding years	10%
+'''
+print(message01)
+# Tax table for excise tax by year.
+exciseTaxRateTable = [.5, .9, .6, .4, .25, .10, .10, .10, .10, .10]
+yearIndex = -1 # Indicates a date prior to the model year; i.e you bought a model year 2024 in year 2023.
+
+# Change the 8 to 10. The program will fault.
+while yearIndex <= 8:
+    print(f"{yearIndex:2d}  {exciseTaxRateTable[yearIndex]}")
+    yearIndex += 1  # Shorthand for yearIndex = yearIndex + 1
+
+
+

lists/grades01.py

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+#!/usr/bin/python3
+# grades01
+# List element manipulation.
+
+scores = [75, 95, 90, 87, 99, 100, 97]
+
+# This is unnecessary and just here for debugging.
+print(scores)
+
+# We will sum the scores. Initialize sum value to zero then add each value to the sum.
+sum = 0
+for score in scores:
+    sum = sum + score
+
+print("The sum of the seven scores is ",sum)
+print("The average of the seven scores is ",sum/7)

lists/grades02.py

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+#!/usr/bin/python3
+# grades02
+# List element manipulation.
+
+scores = [75, 95, 90, 87, 99, 100, 97, 100]
+
+numberOfScores = len(scores)
+
+# We will sum the scores. Initialize sum value to zero then add each value to the sum.
+sum = 0
+for score in scores:
+    sum = sum + score
+
+print(f"The sum of the {numberOfScores} scores is {sum:.2f}")
+print(f"The average of the {numberOfScores}  scores is {sum/numberOfScores:.2f}")

lists/grades03.py

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+#!/usr/bin/python3
+# grades03
+# List element manipulation.
+
+numberOfScores = int(input("How many scores do you want to enter? "))
+counter = 0 # Start counter at 0
+scores = [] # Create an empty list
+while(counter < numberOfScores):
+    nextScore = float(input("Enter the next value: "))
+    scores.append(nextScore)
+    counter += 1
+
+# This is unnecessary and just here for debugging.
+print(scores)
+
+# We will sum the scores. Initialize sum value to zero then add each value to the sum.
+
+sum = 0
+for score in scores:
+    sum = sum + score
+
+print(f"The sum of the {numberOfScores} scores is {sum:.2f}")
+print(f"The average of the {numberOfScores}  scores is {sum/numberOfScores:.2f}")

lists/list01.py

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+#!/usr/bin/python3
+# Program: list01
+
+# Defining and printing list lengths.
+
+# Lists of text values
+dogNames = [ "Harry", "Shenanigans","Katrina","Tanner","Yukon Jack", "Colorado","Mandy"]
+
+# Lists of numbers. These could be integers or floats.
+intList = [7, 2, 12, 18, 16, 21]
+
+
+
+# Print the list and the length
+print("Print the length of the lists.")
+print (dogNames," length = ",len(dogNames))
+print(intList," length = ",len(intList))

lists/list02.py

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+#!/usr/bin/python3
+# Program: list02
+
+# Lists of text values
+dogNames = [ "Harry", "Shenanigans","Katrina","Tanner","Yukon Jack", "Colorado","Mandy"]
+firstNames = ["edward","david", "Bob","mary","alice"]
+
+
+# Print the list and the length
+print("Print the length of the lists.")
+print (dogNames," length = ",len(dogNames))
+print(firstNames," length = ",len(firstNames))
+print("\n")
+
+# Another way to think of the for loop is to read it as
+# "Select the next element from the list, put it into the variable
+# item, the do whatever you like with that one value in item".
+# The for loop ends when the entire list has been processed.
+
+for item in dogNames:
+    print(item)

lists/list03.py

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+#!/usr/bin/python3
+# Program: list03
+
+# Run this code in the visualizer in a web browser at
+# https://pythontutor.com/visualize.html#mode=edit
+
+# Lists of text values
+dogNames = [ "Harry", "Shenanigans","Katrina","Tanner","Yukon Jack", "Colorado","Mandy", "Gimli"]
+
+for item in dogNames:
+    print(item)

lists/list04.py

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+#!/usr/bin/python3
+# Program: list04
+
+# Lists of text values
+dogNames = [ "Harry", "Shenanigans","Katrina","Tanner","Yukon Jack", "Colorado","Mandy"]
+
+# Print the list and the length
+print("Print the length of the list.")
+print (dogNames," length = ",len(dogNames),"Type =",type(dogNames))
+print("\n")
+
+for item in dogNames:
+    print(f"{item:14s}  {type(item)}")
+
+
+print("\nDone!")

lists/range01.py

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+
+# This code is  based on: https://www.w3schools.com/python/ref_func_range.asp
+
+x = range(3, 6)
+print(f"x = {x}, type = {type(x)}")
+
+# Another way to think of the for loop is to read it as
+# "Select the next element from the list or range, put it into the variable
+# item, the do whatever you like with that one value in item".
+# The for loop ends when the entire list has been processed.
+
+for item in x:
+  print(item)
+
+

lists/range02.py

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+
+# This code is based on: https://www.w3schools.com/python/ref_func_range.asp
+
+x = range(3, 6)
+
+# A range can be converted to a list.
+y = list(x)
+
+# Note:
+# What is the difference betweeen using range() and an explicit list?
+# The main difference is that range calculates the value on the fly. This saves memory
+# at the expense of processing speed. The list has each object stored in memory. This saves
+# the processing time at the expense of memory usage.
+
+print(f"x = {x}, type = {type(x)}")
+for item in x:
+  print(item)
+
+print(f"y = {y}, type = {type(y)}")
+for item in y:
+  print(item)

lists/range03.py

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+
+# This code is based on: https://www.w3schools.com/python/ref_func_range.asp
+
+# Create a range from 2 to 10 with steps of two
+x = range(2, 10, 2)
+y = list(x)
+
+# Note:
+# What is the difference betweeen using range() and an explicit list?
+# The main difference is that range calculates the value on the fly. This saves memory
+# at the expense of processing speed. The list has each object stored in memory. This saves
+# the processing time at the expense of memory usage.
+
+print(f"x = {x}, type = {type(x)}, length = {len(x)}")
+
+for item in x:
+  print(item)
+
+print(f"y = {y}, type = {type(y)}, length = {len(y)}")
+for item in y:
+  print(item)