Application developers are always working with files. You create them whenever you write a new script or application. You write reports in Microsoft Word, you save emails or download books or music. Files are everywhere. Your web browser downloads lots of little files to make your browsing experience faster. When you write programs, you have […]
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In this video tutorial, you will learn all about Python’s list data type. If videos aren’t your thing, then you can read the same content here: Python 101: Learning About Lists
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Creating software is hard work. To make your software better, your application needs to keep working even when the unexpected happens. For example, let’s say your application needs to pull information down from the Internet. What happens if the person using your application loses their Internet connectivity? Another common issue is what to do if
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Learn how to use Strings in Python in this screencast. This video is based on a chapter from my book, Python 101 2nd Edition. You can read the written version here: Python 101: Working with Strings
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There are many times when you are writing code that you will need to find a way to iterate over something. Perhaps you’ll need to iterate over the letters in a string or the objects in a list. The process of iterating over something is done via a loop. A loop is a programming construct
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Type checking or hinting is a newer feature of Python that was added in Python 3.5. Type hinting is also known as type annotation. Type hinting is adding special syntax to functions and variable declarations that tell the developer what type the argument or variable is. Python does not enforce the type hints. You can
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You will be using strings very often when you program. A string is a series of letters surrounded by single, double or triple quotes. Python 3 defines string as a “Text Sequence Type”. You can cast other types to a string using the built-in str() function. In this article you will learn how to: Create
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Dictionaries are another fundamental data type in Python. A dictionary is a key, value pair. Some programming languages refer to them as hash tables. They are described as a mapping object that maps hashable values to arbitrary objects. A dictionary’s keys must be immutable, that is, unable to change. Starting in Python 3.7, dictionaries are
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Tuples are another sequence type in Python. Tuples consist of a number of values that are separated by commas. A tuple is immutable whereas a list is not. Immutable means that the tuple has a fixed value and cannot change. You cannot add, delete or modify items in a tuple. Immutable objects are useful when
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The original Python 101 was the first book I had ever written. In deciding to write a 2nd edition, I needed to decide what I should keep and what I should remove from the book. What I ended up doing was rewriting the book from the ground up. In the original book, Python 101 was
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Lists are a fundamental data type in the Python programming language. A list is a mutable sequence that is typically a collection of homogeneous items. Mutable means that you can change a list after its creation. You will frequently see lists that contain other lists. These are known as nested lists. You will also see
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In this screencast, we will learn how to turn your Python application into a Windows installer using Inno Setup. You can also read the chapter this video is based on here or get the book on Leanpub
Python 101: Episode #44 – Creating an Installer with Inno Setup Read More »
In this screencast, we will learn how to turn your Python code into a Windows executable file using the bbfreeze project. You can also read the chapter this video is based on here or get the book on Leanpub Related Reading A bbfreeze Tutorial – Build a Binary Series!
Python 101: Episode #40 – Creating Executables with bbfreeze Read More »
In this screencast, we will be learning about Python’s builtin sqlite module. This episode is based on chapter 18 of Python 101, which you can read here: http://python101.pythonlibrary.org/
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Python gives the developer several tools for working with dates and time. In this article, we will be looking at the datetime and time modules. We will study how they work and some common uses for them. Let’s start with the datetime module! The datetime Module We will be learning about the following classes from
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