#Python Pop Quiz 🐍❓

What is the output of this silly code?

A) SyntaxError 
B) RuntimeError 
C) ['Python'] 
D) ['P', 'y', 't', 'h', 'o', 'n']

🎄Day 8 of the Countdown to Christmas 🎄

Today, I am giving away 50 copies of The Python Quiz Book!

https://driscollis.gumroad.com/l/pyquiz/ofrkhb1

🎄Day 5 of the Countdown to Christmas 🎄

Today I am giving away 50 copies of my book, Creating GUI Applications with wxPython!

https://driscollis.gumroad.com/l/wxgui/wsz9vel

🎄Day 2 of the Countdown to Christmas 🎄

I am giving away 100 copies of Python 201: Intermediate Python!

https://driscollis.gumroad.com/l/py201/ynt1u1m

The Countdown to Christmas starts NOW! 🐍🎄

I am giving away 100 copies of Python 101 2nd Edition. Here's the link and Merry Christmas!

https://driscollis.gumroad.com/l/pypy101/f6e0093

Check out my latest #Python YouTube video!

Learn how to read from Excel with Python and OpenPyXL

Here's the link where you can watch and subscribe:

https://www.youtube.com/watch?v=QdQAVR8wWjE

Learn Excel Data Extraction with Python

The Kickstarter Campaign for my latest #Python book got funded in less than 11 hours! 🐍🔥

Learn all about Python Logging in this book and in its companion video course

You can still join the Kickstarter to get exclusive perks 🔥

Here are some examples:

🐍 Signed copy of the book
🐍 Custom t-shirt
🐍 An exclusive price for a lifetime subscription to Teach Me Python

https://www.kickstarter.com/projects/driscollis/python-logging-book-and-course

Python Logging Book Kickstarter Success

Today is a great day to talk about #Python lambdas!

Let's learn about them in a thread

🐍🧵👇

A Python lambda is a one-line anonymous function.

Rule #1 is do NOT assign a lambda to a variable.

When you do that, it's no longer an anonymous function. You should just create a regular function at that point

If you want to run a lambda in your REPL, wrap it in parentheses, like this:

Lambdas can be found in a lot of functional programming constructs.

One popular use case is to use a lambda inside of Python's map() function:

A lot of people like to use lambdas with Python's sorted() built-in.

It's a handy way to add a simple key function:

Tkinter, a GUI package that comes with Python, uses lambdas for event handlers.

Here's an example:

You can return a lambda from a function. This can be a useful way to create a factory type function

You may recognize this coding pattern from decorators as well


You can read the unrolled version of this thread here: https://typefully.com/driscollis/FNdKZ3N

Exploring Python Lambdas

Did you know you can swap variables in #Python without a temp variable? 🐍🔥

Check it out:

Today's mini-thread will be about #Python's package installer - pip! 🐍🚀

Let's get started!

 👇🧵

There are two primary methods for installing a package with pip

🐍 Use the pip exe explicitly
🐍 Use python -m

Need to install multiple packages with pip?

That's easy! You just need to separate the names with spaces:

What happens if an install fails for some reason?

Well, you end up with a bad day!

You can fix that by reinstalling the package with pip.

Here's an example of reinstalling the requests package:

Pip also supports the requirements.txt file. 🐍🔥

You can install everything in that file using the -r command, like this:

Did you see there's a new release of your favorite package?

You can upgrade to the latest using --upgrade or -U with pip!

Sometimes you install a package and find out that it doesn't meet your needs.

It's always sad to say goodbye, but pip makes it easy with the uninstall command:

Thanks so much for learning about #Python's package manager, pip, with me today!

You can read the unrolled version of this thread here: https://typefully.com/driscollis/6Mpo4OT