Add practice problems/solutions to Ch. 8-11

1_beginner/chapter3/practice/integer.py

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+"""
+Integer
+
+Write a program that takes any number
+(decimals included) as input, and outputs
+whether or not it's an integer.
+"""
+
+# Insert code here.

1_beginner/chapter3/practice/names.py

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+"""
+Names
+
+Write a program that asks a user
+for two names, and outputs True if
+the names are NOT the same.
+"""
+
+# Insert code here.

1_beginner/chapter3/practice/wizard.py

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+"""
+Wizard
+
+There are 3 criteria to determine whether
+you’re a wizard or not.
+
+Define a variable called is_wizard and
+use logic operators to set it to the correct
+value based on the criteria.
+
+Here are some example variable values and outputs.
+You'll need to figure out the order of logic operators
+needed to turn these inputs into these outputs! :)
+
+Example variable values and output:
+
+If you can fly, you’ve not a battled a dragon,
+and you’re alive, output “Wizard: True”
+
+If you can fly, you’ve battled a dragon,
+and you’re not alive, output “Wizard: True”
+
+If you can’t fly, you’ve battled a dragon,
+and you’re not alive, output “Wizard: False”
+
+If you can’t fly, you’ve battled a dragon,
+and you’re alive, output “Wizard: True"
+
+The initial variables are given, but you'll have
+to change the values to test your code.
+"""
+
+can_fly = True
+battled_dragon = False
+is_alive = True
+
+# Insert your code here.
+
+# print("Wizard:", is_wizard)

1_beginner/chapter3/solutions/integer.py

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+"""
+Integer
+
+Write a program that takes any number
+(decimals included) as input, and outputs
+whether or not it's an integer.
+"""
+
+# Get input as a floating point
+x = float(input("Enter a number: "))
+
+# Compare x to the integer version of itself
+is_integer = x == int(x)
+
+print("Is integer? " + str(is_integer))

1_beginner/chapter3/solutions/names.py

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+"""
+Names
+
+Write a program that asks a user
+for two names, and outputs True if
+the names are NOT the same.
+"""
+
+name1 = input("Person 1: ")
+name2 = input("Person 2: ")
+
+# "False" if name1 and name2 are equal
+not_same = name1 != name2
+
+print("Not the same?", not_same)

1_beginner/chapter3/solutions/wizard.py

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+"""
+Wizard
+
+There are 3 criteria to determine whether
+you’re a wizard or not.
+
+Define a variable called is_wizard and
+use logic operators to set it to the correct
+value based on the criteria.
+
+Here are some example variable values and outputs.
+You'll need to figure out the order of logic operators
+needed to turn these inputs into these outputs! :)
+
+Example variable values and output:
+
+If you can fly, you’ve not a battled a dragon,
+and you’re alive, output “Wizard: True”
+
+If you can fly, you’ve battled a dragon,
+and you’re not alive, output “Wizard: True”
+
+If you can’t fly, you’ve battled a dragon,
+and you’re not alive, output “Wizard: False”
+
+If you can’t fly, you’ve battled a dragon,
+and you’re alive, output “Wizard: True"
+
+The initial variables are given, but you'll have
+to change the values to test your code.
+"""
+
+can_fly = True
+battled_dragon = False
+is_alive = True
+
+is_wizard = can_fly or (battled_dragon and is_alive)
+
+print("Wizard:", is_wizard)

1_beginner/chapter5/practice/multiply.py

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+"""
+Multiply
+
+Write a program that asks the user
+for 10 integers, multiplies them all
+together, and displays the product at
+the end.
+
+Use a for loop!
+"""
+
+# Insert your code here.

1_beginner/chapter5/solutions/multiply.py

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+"""
+Multiply
+
+Write a program that asks the user
+for 10 integers, multiplies them all
+together, and displays the product at
+the end.
+
+Use a for loop!
+"""
+
+# Initial value is 1
+product = 1
+
+# Ask the user for 10 numbers and multiply.
+for i in range(10):
+    product *= int(input("Enter a number: "))
+
+print("The product is " + str(product))

1_beginner/chapter6/practice/grades.py

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+"""
+Grades
+
+Create a list called names and a list called grades.
+Ask the user to input a name, and then ask
+them to input the person's grade. Add the inputs
+to the corresponding lists. Use a for loop to ask
+for these inputs 5 times.
+
+Display the info as "[name]: [grade]".
+
+Example lists AFTER user input:
+names = ["John", "Belle", "Ria", "Steph", "Louis"]
+grades = [93, 85, 100, 82, 70]
+
+Example output:
+John: 93
+Belle: 85
+etc.
+"""
+
+# Insert your code here.

1_beginner/chapter6/practice/indexing.py

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+"""
+Indexing
+
+1. Create a list with the following names:
+    Mark
+    Arya
+    Paz
+    Lulu
+    Jon
+    Robin
+2. Print the first element of the list.
+3. Print the 3rd-to last name ("Lulu") WITHOUT
+using people[3].
+4. Print the second element of the list.
+
+Don't "hard-code" the answers.
+For example, don't write print("Mark").
+Instead, use list indexing to get the values
+from the list.
+"""
+
+# Insert your code here.

1_beginner/chapter6/practice/manipulation.py

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+# Manipulation
+# Modify the following code according to
+# the instructions.
+
+nums = []
+
+"""
+The following code adds the numbers 0, 10, ... 100
+to the list nums, and displays this list.
+First, make a copy of nums and store it in the varible more_nums.
+
+Then, clear nums, and add the numbers
+2, 7, 12, ... 72 to nums instead.
+"""
+
+for i in range(0, 101, 10):
+    nums.append(i)
+print(nums)
+
+"""
+Write the code for the following actions:
+Change the 1st element of more_nums to -100.
+Change the 2nd element of nums to 0.
+Remove the last element from more_nums.
+Remove every element divisible by 3 from more_nums.
+Insert a 21 after the 20 in more_nums (assume that
+you DON'T know the index of 20 ahead of time).
+Insert 15 0's in the 3rd-to-last position.
+    Sample list after insertions:
+    [..., 0, 0, ..., 0, 0, element, element]
+Display nums and more_nums.
+"""

1_beginner/chapter6/practice/names.py

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+"""
+Names
+
+Make a list called people and fill it with
+at least 6 names. Make another list and use
+list slicing to fill it with every other name
+from the original list, starting with the 1st name.
+Print both lists.
+"""
+
+# Insert your code here.
+
+"""
+Use a for loop to ask the user to add 4 names
+to the list. After you ask for each name, print
+out the last 5 names of the list.
+"""

1_beginner/chapter6/practice/restaurant.py

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+"""
+Restaurant
+Write a program that asks someone
+what they want to order and give them
+the total cost of their meal.
+
+Each meal should have 3 categories
+(ex. food, drinks, desserts), and the user
+must order 1 item from each category.
+
+Make sure to include a 7% sales tax
+(multiply the total by 1.07), and
+round the answer to 2 decimal places
+
+The steps are outlined in the following code.
+"""
+
+"""
+1. Store the menu in lists.
+Each of the 3 categories should have an
+items menu and a costs menu.
+
+Example of the 6 lists you need to create:
+foods, food_costs, drinks, drink_costs,
+desserts, dessert_costs
+"""
+
+# Insert your lists here.
+
+"""
+2. Display the menu.
+Iterate through the items and costs for each
+category to do this.
+
+Example output:
+Welcome to my restaurant! Here's the menu:
+
+Food:
+Pancakes: $5
+Waffles: $3
+Toast: $100
+
+Drinks:
+Juice: $2
+Water: $50
+Tea: $1
+
+Sugar:
+Muffin: $4
+Lollipop: $20
+Brownie: $15
+"""
+
+# Insert the code for displaying the menu here.
+
+"""
+3. Ask the user to order.
+This code should be in a loop. After you display the
+user's total at the end, ask them if they want to
+order again. If they say "no", the program should end.
+Otherwise, you should take their order and display the
+new total again.
+
+As you take their order, check if what they ordered
+is in the corresponding list for that category.
+If it is, add the price of the item to the total.
+Otherwise, display a warning message and add $1000 to the total.
+
+Example order (using menu above):
+What food would you like? pancakes
+What drink would you like? water
+What sugar item would you like? candy
+You didn't order a proper sugary item! Adding $1000 to tab.
+"""
+
+# Insert the code that takes the user's order here.
+# Make sure it's in a loop.
+
+"""
+4. Finalize the total.
+Add a 7% sales tax to your sum, and
+round this value to 2 decimal places.
+Display the total.
+"""
+
+# Add the code to finalize and display the total here.
+
+"""
+5. As mentioned in Step 3, ask the user if they want
+to order again. If they say "no", then stop the program.
+Otherwise, let them order again.
+"""
+
+# Ask the user if they want to order again here.

1_beginner/chapter6/solutions/grades.py

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+"""
+Grades
+
+Create a list called names and a list called grades.
+Ask the user to input a name, and then ask
+them to input the person's grade. Add the inputs
+to the corresponding lists. Use a for loop to ask
+for these inputs 5 times.
+
+Display the info as "[name]: [grade]".
+
+Example lists AFTER user input:
+names = ["John", "Belle", "Ria", "Steph", "Louis"]
+grades = [93, 85, 100, 82, 70]
+
+Example output:
+John: 93
+Belle: 85
+etc.
+"""
+
+names = []
+grades = []
+
+# Collect inputs.
+for i in range(5):
+    names.append(input("Enter a name: "))
+    grades.append(input("Enter their grade: "))
+
+# Format output correctly.
+for i in range(len(names)):
+    print(names[i] + ": " + grades[i])