Gain insights into Python by exploring basic to advanced concepts, including loops, classes, and GUIs with Tkinter. Delve into testing and become a productive Python programmer.

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In this course, you will get a comprehensive overview of Python. You will start by laying the foundation and learning the introductory topics like operators, conditional statements, functions, loops, assignment statements, and more. You will then move onto more advanced topics such as classes and inheritance, iterators, list comprehensions, and dictionaries. Along with this, you will also get to explore the concept of testing and take a look at how GUI applications can be designed using Tkinter, Python's standard GUI library. 

By the time you're done, you'll be able to hit the ground running and be equipped with the tools that will allow you to be productive in Python.

Python 3: From Beginner to Advanced

def fib_gen(n):
    x, y = 0, 1
    for _ in range(n):
        yield x
        x, y = y, x + y

n = 10
gen = fib_gen(n)
print(list(gen))

def fib_gen(n):
    a, b = 0, 1
    for _ in range(n):
        yield a
        a, b = b, a + b

## Explanation

The first thing we need to do is declare our initial variables (`x`, `y`) at **line 2** and assign them the values `0` and `1` which are the starting values for a Fibonacci sequence. 

Next, since we have been provided with the variable `n`, which denotes the number of terms that must be present in the sequence, we will use a `for` loop to iterate over a sequence from 0 to `n` at **line 3**. 

Inside the `for` loop, at **line 4**, we use the `yield` keyword alongside `x`. The following describes the entire yield process here:

1. The first time the `for` loop calls the generator object, it will start running from the beginning of the code until it reaches the `yield` keyword at **line 4**. After this, it will return the **first** value. In this case, the value will be of `x`. 
2. Then, each successive call will run another **iteration** of the loop and return the **next** value. 
3. This will keep going until the **generator** is **empty**, which will be when the `for` loop reaches its **end**. 

Finally, at **line 5**, we need to update the values of our `x` and `y` `variables`, where `x` becomes equal to `y` and `y` becomes equal to the **sum** between `x` and `y`. 

# Explanation

The first thing we need to do is declare our initial variables (`x`, `y`) at **line 2** and assign them the values `0` and `1` which are the starting values for a Fibonacci sequence. 

Next, since we have been provided with the variable `n`, which denotes the number of terms that must be present in the sequence, we will use a `for` loop to iterate over a sequence from 0 to `n` at **line 3**. 

Inside the `for` loop, at **line 4**, we use the `yield` keyword alongside `x`. The following describes the entire yield process here:

1. The first time the `for` loop calls the generator object, it will start running from the beginning of the code until it reaches the `yield` keyword at **line 4**. After this, it will return the **first** value. In this case, the value will be of `x`. 
2. Then, each successive call will run another **iteration** of the loop and return the **next** value. 
3. This will keep going until the **generator** is **empty**, which will be when the `for` loop reaches its **end**. 

Finally, at **line 5**, we need to update the values of our `x` and `y` `variables`, where `x` becomes equal to `y` and `y` becomes equal to the **sum** between `x` and `y`. 

This lesson explains the solution for the "Fibonacci generator" problem.

Introduction

The Absolute Bare Minimum

Better Tools

Classes

Getting Fancy

Testing

Graphical User Interfaces

Modules

Appendix

I Guess We're Doing Python Now Exam

Solution Review: Creating Fibonacci Sequence Using Generator

Solution

Explanation