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

## Introduction to Tkinter

There are several GUI (Graphical User Interface, pronounced “gooey”) systems that can be used with Python. Here, we’ll  mainly focus on **Tkinter**, which comes bundled with the standard Python distribution.

**Tkinter** is the standard GUI library that comes preinstalled with Python and provides a very simple and easy to use interface that allows users to create GUI applications. It has a wide collection of widgets, including buttons, menus and textfields, each of which can help users create and build GUI elements.

## Dialogs in Tkinter

Many programs do not require a full GUI, just a dialog box or two. **Tkinter** provides a number of these. To use them, import `messagebox`, `simpledialog`, and/or `filedialog` from **Tkinter**.

### Message boxes

Message boxes are used to display messages along with a title using Tkinter's `messagebox` dialog box. The following includes a list of `messagebox` types:

* `messagebox.showinfo(title, message)`
* `messagebox.showwarning(title, message)`
* `messagebox.showerror(title, message)`
    > All the above are essentially the same. The difference is which icon is displayed with each type. All provide for a _`title`_, a _`message`_, and an `OK` button.
* `result = messagebox.askyesno(title, question)`
    > This provides `No` and `Yes` buttons, which return `False` or `True`, respectively.

The following code creates **four** different message boxes: one with an **informational message**, one with an **error message**, one with a **warning message**, and one with a **yes or no** question:

# Introduction to Tkinter

There are several GUI (Graphical User Interface, pronounced “gooey”) systems that can be used with Python. Here, we’ll  mainly focus on **Tkinter**, which comes bundled with the standard Python distribution.

**Tkinter** is the standard GUI library that comes preinstalled with Python and provides a very simple and easy to use interface that allows users to create GUI applications. It has a wide collection of widgets, including buttons, menus and textfields, each of which can help users create and build GUI elements.

# Dialogs in Tkinter

Many programs do not require a full GUI, just a dialog box or two. **Tkinter** provides a number of these. To use them, import `messagebox`, `simpledialog`, and/or `filedialog` from **Tkinter**.

## Message boxes

Message boxes are used to display messages along with a title using Tkinter's `messagebox` dialog box. The following includes a list of `messagebox` types:

* `messagebox.showinfo(title, message)`
* `messagebox.showwarning(title, message)`
* `messagebox.showerror(title, message)`
    > All the above are essentially the same. The difference is which icon is displayed with each type. All provide for a _`title`_, a _`message`_, and an `OK` button.
* `result = messagebox.askyesno(title, question)`
    > This provides `No` and `Yes` buttons, which return `False` or `True`, respectively.

The following code creates **four** different message boxes: one with an **informational message**, one with an **error message**, one with a **warning message**, and one with a **yes or no** question:

Learn about dialogs  as well as the Tkinter structure, which comes bundled with the standard Python distribution.

Introduction

The Absolute Bare Minimum

Better Tools

Classes

Getting Fancy

Testing

Graphical User Interfaces

Modules

Appendix

I Guess We're Doing Python Now Exam

Tkinter Introduction

Introduction to Tkinter

Dialogs in Tkinter

Message boxes