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Tweets by @treyhunner.

Python Chat

@PythonChat

Live webcasts for #Python developers. Tweets by @treyhunner.

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Does your company have an individual training budget that expires at the end of year? 💸 If you use #Python at work, sign up for the @PythonMorsels All Access plan and submit your training reimbursement before year end. 🐍💼 pythonmorsels.com/all-python-exe…

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Python skill-building for professional developers

Practice a new intermediate-level Python concept every week


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Managing a #Python team and want to chat about your team's skill trajectory? I have ideas & opinions! I'd love to chat about: 1. On-boarding new hires 📋 2. Fostering kind code style discussions 🐕 3. Learning from each other regularly 👩‍🏫 4. Team learning in general 🤔 DM me 💬


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New blog post: What's great about #Python 3.10? There's some fun new features, but improved error messages are *the* winning Python 3.10 feature. treyhunner.com/2021/10/whats-…


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When we use keyword/named arguments, it's the name that matters, not the position Read the full article: Keyword (Named) Arguments in Python: How to Use Them ▸ trey.io/U92hu3 #Python


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Our class instantiation syntax in Python is the same as our function call syntax. Instead of "new SomeClass()" we write "SomeClass()". Because of this we use the word "function" in a fuzzy way: "function" is often used to mean "callable". pythonmorsels.com/topics/callabl…

A callable is an object that you can call. Functions are callables in #Python, but so are classes (many of the "built-in functions" are actually classes). pythonmorsels.com/topics/callabl…



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In #Python, you can pass function objects as an argument to another function. In fact, some of the built-in functions, like sorted, specifically accept functions as an argument. pythonmorsels.com/topics/passing…


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You can break up long lines of #Python code with implicit line continuation. PEP 8 recommends relying on implicit line continuation instead of putting a \ at the end of lines to continue them. pythonmorsels.com/topics/breakin…


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If you're new to list comprehensions in #Python, I recommend writing your comprehensions by copy-pasting your way from a "for" loop. This way you can anchor your understanding of comprehensions on your existing knowledge of "for" loops. pythonmorsels.com/topics/turning…


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What is a list comprehension in #Python? What are they used for and how are they different from a for loop? pythonmorsels.com/topics/what-ar…


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Something folks often ask me in my Python trainings: are immutable objects the same as constants? 🤔 They're not! 😮 Immutable objects stop you from mutating an object but constants stop you from assigning to a variable (remember: variables are pointers in Python). 🐍🍪

We have immutable objects in Python but we don't have constant variables. The UPPERCASE_CONVENTION for constants is just a naming convention in #Python. It doesn't stop variables from being re-assigned. pythonmorsels.com/topics/python-…



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A callable is an object that you can call. Functions are callables in #Python, but so are classes (many of the "built-in functions" are actually classes). pythonmorsels.com/topics/callabl…


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Need an attribute that updates its value automatically? Use a property! In the #Python world, we tend to prefer properties over getter methods. pythonmorsels.com/topics/making-…


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We have immutable objects in Python but we don't have constant variables. The UPPERCASE_CONVENTION for constants is just a naming convention in #Python. It doesn't stop variables from being re-assigned. pythonmorsels.com/topics/python-…


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Checking an object's truthiness checks for non-emptiness and non-zero-ness. FYI: the #Python docs don't mention "truthy" or "falsey" even once. The docs call it "truth value testing" but Pythonistas rarely use that phrase colloquially. pythonmorsels.com/topics/truthin…


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Instead of using hard-coded indices to get tuple elements, use tuple unpacking to give descriptive names to each item. Important items should have a name instead of a number. #Python pythonmorsels.com/topics/tuple-u…


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When you import a module in #Python, you'll get access to a module object with attributes representing each of the variables in that module. pythonmorsels.com/topics/importi…


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Let's look at different techniques for counting the number of times things appear in a list. Read more 👉 trey.io/wV2O5R #python


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Parentheses in #Python's class & function definitions mean different things In a function definition, parentheses after the name denote the functions' arguments. In a class definition, parentheses after the name denote the class' parent classes. pythonmorsels.com/topics/inherit…


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Classes, modules, and functions are all mutable objects in #Python 🤯

In #Python, everything is an object. Classes are objects. Modules are objects. Functions are objects. In fact, they're all mutable objects! pythonmorsels.com/topics/everyth…



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The first method you'll see in most #Python classes is the init method. This isn't a constructor method but an initializer method (because by the time init is called, a new class instance has already been "constructed") pythonmorsels.com/topics/what-is…


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