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Mike Driscoll

@driscollis

Jun 5

#Python has had the concept of context managers for a loooong time!

Let's talk about context managers again!

🧵🐍👇

The `with` statement, which is the normal way for working with context managers, was added back in Python 2.5!

Here is a pretty common example of using a context manager:

The beauty of a context manager is that they allow you to do some setup and teardown automatically.

The downside is that is abstracted away and can sometimes make the code less obvious when debugging

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Mike Driscoll

@driscollis

Jun 3

Did you know that #Python has a `slice()` function! 🐍

Let's learn more about that now!

🧵👇🐍

The `slice()` function returns a slice object representing the set of indices specified by `range(start, stop, step)`

Read more in the #Python docs here:

docs.python.org/3/library/func…

You can use the `slice()` function to created NAMED SLICES in #Python!

Here's an example:

Read 4 tweets

Mike Driscoll

@driscollis

Jun 1

Hi 👋! I'm Mike!

I write about:

🐍 #Python
🕸️ Python Web Frameworks
💦 Python GUIs
🤖 Python & automation
📊 Python and data visualization
🐼 Python and data science
📚 Indie publishing
📖 Content creation
🐍 Python and PDFs
🔥 Python and Excel
🖼️ Python & Images

and more!

@mousevspython

If you like to learn by reading tutorials, you should check out my website @mousevspython 🐭🐍

blog.pythonlibrary.org

@mousevspython

@mousevspython If you are a visual learner, then you might enjoy my YouTube channel:

youtube.com/c/MouseVsPython

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Mike Driscoll

@driscollis

May 11

Module number 3️⃣ on our #Python standard lib tour is `argparse`

The argparse module makes it easy to write user-friendly command-line interfaces.

#PythonStdLib 🐍🔥

🧵👇

Here is an example of creating an argument parser with no arguments.

Why would you do that? Well, to find out what `argparse` gives you out of the box 📦!

You can see here that `argparse` gives you some help text and prints out your provided description

A common coding pattern for argument parsing is to put the argument parsing code into its own function or method and then return the parsed args.

Here's an example:

Read 8 tweets

Mike Driscoll

@driscollis

May 11

The aifc module in #Python will be deprecated in Python 3.11

But it's still worth knowing about because so many people will still be able to use it.

This module provides support for reading and writing AIFF and AIFF-C files

docs.python.org/3/library/aifc…

#PythonStdLib 🐍🔥

🧵👇

AIFF is Audio Interchange File Format, a format for storing digital audio samples in a file. AIFF-C is a newer version of the format that includes the ability to compress audio data.

You can read and write these files with #Python using the aifc module!

When you go create an AIFF file with #Python, you use much the same type of code as you would when you use Python's `wav` module.

Here's an example:

Read 5 tweets

Mike Driscoll

@driscollis

May 10

#Python comes with lots of modules. Let's get started by looking at the `abc` module.

The `abc` module isn't for learning the alphabet! It's for creating Abstract Base Classes 🤯!

Let's learn more about those now 🧵👇

#PythonStdLib 🐍🔥

Abstract base classes (ABCs) are defined in PEP 1139.

You can read all about them here:

python.org/dev/peps/pep-3…

Abstract Base Classes in #Python provide the following:

🐍 A way to overload isinstance() and issubclass().
🐍 A new module abc which serves as an “ABC support framework”.
🐍 Specific ABCs for containers and iterators, to be added to the collections module.

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