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Dec. 19, 2023 » James Bennett » [Archived Version]
This is part of a series of posts I’m doing as a sort of Python/Django Advent calendar, offering a small tip or piece of information each day from the first Sunday of Advent through Christmas Eve. See the first post for an introduction. Let this be a warning Python provides the ability to issue a warning as a step below raising an exception; warnings are issued by calling the warnings.warn() function, which at minimum … Read full entry
Read MoreDec. 19, 2023 » James Bennett » [Archived Version]
This is part of a series of posts I’m doing as a sort of Python/Django Advent calendar, offering a small tip or piece of information each day from the first Sunday of Advent through Christmas Eve. See the first post for an introduction. A-sync-ing feeling Async Python can be useful in the right situation, but one of the tricky things about it is that it requires a bit more effort to run than normal synchronous … Read full entry
Read MoreDec. 17, 2023 » James Bennett » [Archived Version]
This is part of a series of posts I’m doing as a sort of Python/Django Advent calendar, offering a small tip or piece of information each day from the first Sunday of Advent through Christmas Eve. See the first post for an introduction. Being methodical about Python Python classes support three basic types of methods: Instance methods, which are what you get by default when writing a def statement inside a class body. These are … Read full entry
Read MoreDec. 17, 2023 » James Bennett » [Archived Version]
This is part of a series of posts I’m doing as a sort of Python/Django Advent calendar, offering a small tip or piece of information each day from the first Sunday of Advent through Christmas Eve. See the first post for an introduction. An URL-y warning Suppose you’re writing a blog in Django, and you get to the point where you’re setting up the URLs for the entries. Django has two ways to write … Read full entry
Read MoreDec. 15, 2023 » James Bennett » [Archived Version]
This is part of a series of posts I’m doing as a sort of Python/Django Advent calendar, offering a small tip or piece of information each day from the first Sunday of Advent through Christmas Eve. See the first post for an introduction. A lurking problem Imagine you write a Python library named, say, foo. And you diligently set up the configuration to package it for distribution (which is not that hard; you can … Read full entry
Read MoreDec. 15, 2023 » James Bennett » [Archived Version]
This is part of a series of posts I’m doing as a sort of Python/Django Advent calendar, offering a small tip or piece of information each day from the first Sunday of Advent through Christmas Eve. See the first post for an introduction. Functionally a database On top of the basic query syntax we’re all used to, SQL databases tend to have a large number of built-in functions — some of which are standardized, some … Read full entry
Read MoreDec. 14, 2023 » James Bennett » [Archived Version]
This is part of a series of posts I’m doing as a sort of Python/Django Advent calendar, offering a small tip or piece of information each day from the first Sunday of Advent through Christmas Eve. See the first post for an introduction. A view to a database Most databases support creating and working with views, which, if you’ve never encountered them before, are like a virtual table — instead of being defined by … Read full entry
Read MoreDec. 13, 2023 » James Bennett » [Archived Version]
This is part of a series of posts I’m doing as a sort of Python/Django Advent calendar, offering a small tip or piece of information each day from the first Sunday of Advent through Christmas Eve. See the first post for an introduction. Inheritance and its discontents People can, and do, debate whether inheritance in object-oriented programming languages is a thing that ought to exist. There are even debates about what “inheritance” ought to mean … Read full entry
Read MoreDec. 12, 2023 » James Bennett » [Archived Version]
This is part of a series of posts I’m doing as a sort of Python/Django Advent calendar, offering a small tip or piece of information each day from the first Sunday of Advent through Christmas Eve. See the first post for an introduction. Let’s have an argument Suppose you write a function like this: def divide(dividend, divisor): """ Divide ``dividend`` by ``divisor`` and return the result. """ return dividend … Read full entry
Read MoreDec. 10, 2023 » James Bennett » [Archived Version]
This is part of a series of posts I’m doing as a sort of Python/Django Advent calendar, offering a small tip or piece of information each day from the first Sunday of Advent through Christmas Eve. See the first post for an introduction. Consider a docstring Suppose you’re writing a Python function and, as you’re supposed to do, you give it a docstring, and you even provide some examples of how the function is supposed … Read full entry
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