Kursusindhold

Introduction to Python (copy)

1. Getting Started

First Steps Comments Simple Math: Add & Subtract Simple Math: Multiply & Divide Recap

2. Variables and Types

Data Types Storing Data in Variables Variable Naming Rules Using Variables String Indexing and Length String Slicing and Concatenation Challenge: Inventory Sorting Capstone Recap

3. Conditional Statements

Boolean Data Type Combining Conditions Challenge: Boolean Logic Membership Operators and Type Comparisons Conditional Expressions Challenge: Product Management Capstone Recap

4. Other Data Types

Lists and List Methods Nested Lists Challenge: List Management Tuples and Tuple Methods Tuple Operations Challenge: Tuple Operations Dictionaries and Dictionary Methods Challenge: Pricing Adjustment Capstone Recap

5. Loops

For Loops While Loops Range Function Iterating Over Indexes Challenge: Sales and Shipments Nested Loops Challenge: Automating Stock Control Challenge: Solo Coding Capstone Recap

6. Functions

Built-in Functions Challenge: Zip and Sort Functions User Defined Functions List Behavior in Functions Functions with no Return Modifying Functions Challenge: Product Revenues Capstone Recap

Recap

Congratulations on completing this comprehensive journey into Python loops! You've acquired crucial skills that will assist you in automating daily tasks and serve as a foundation for more advanced Python learning.

Here's a quick summary of what you've covered:

For Loops

You've mastered the syntax and applications of for loops, learning to iterate over collections like lists and dictionaries efficiently.


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product_stock = {"Milk": 120, "Eggs": 200}

# Iterating over a dictionary
for product, stock in product_stock.items():
    print(f"{product} has {stock} units in stock.")

While Loops

You have explored the setup and utility of while loops for situations where the duration of looping isn't predetermined, such as continuously monitoring value until a certain condition is met:


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milk_stock = 50

# Monitoring stock levels
while milk_stock > 15:
    print(f"Milk stock: {milk_stock}")
    milk_stock -= 10  # Decrementing stock

Leveraging the Range Function

You have learned to use the range() function for generating sequences of numbers, which is especially useful in loops for repetitive tasks. We have covered its three forms: starting from zero, defining a start and stop, and specifying a step:


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# Using `range()` for scheduling
for day in range(1, 8):  # From day 1 to day 7
    print(f"Schedule for day {day}")

Iterating Over Indexes

Iterating over indexes using range() and len() has been crucial for accessing and manipulating list elements directly by their indexes, ensuring precision in tasks with multiple collections:


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products = ["Bread", "Eggs", "Milk"]
prices = [2.30, 2.50, 3.40]

# Applying a discount and displaying the updated prices
for i in range(len(prices)):
    prices[i] =  prices[i] * 0.9  # Apply a 10% discount to each price
    print(f"The price of {products[i]} is now {prices[i]}")

Mastering Nested Loops

You've explored nested loops, demonstrating how one loop can be placed inside another to manage multi-dimensional data structures, like lists of lists. This approach mirrors real-world situations, such as managing different sections of a store:


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aisles = [["Apples", "Bananas"], ["Milk", "Cheese"]]

# Outer loop to manage aisles
for aisle in aisles:
    print(f"Aisle #{aisles.index(aisle) + 1}:")

    # Nested loop to manage items in each aisle
    for item in aisle:
        print(item)

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Sektion 5. Kapitel 9

Introduction to Python (copy)

Recap

For Loops

While Loops

Leveraging the Range Function

Iterating Over Indexes

Mastering Nested Loops

1. Which of the following is a correctly initialized `for` loop?

2. What `stock` quantity would cause this loop to be skipped?

3. What are the three possible arguments for the `range()` function?

4. When we need to access the index of each list element, what do we use to iterate through the indices?

Introduction to Python (copy)

Recap

For Loops

While Loops

Leveraging the Range Function

Iterating Over Indexes

Mastering Nested Loops

1. Which of the following is a correctly initialized for loop?

2. What stock quantity would cause this loop to be skipped?

3. What are the three possible arguments for the range() function?

4. When we need to access the index of each list element, what do we use to iterate through the indices?

1. Which of the following is a correctly initialized `for` loop?

2. What `stock` quantity would cause this loop to be skipped?

3. What are the three possible arguments for the `range()` function?