All Posts · Redowan's Reflections

2023

Debugging a containerized Django application in Jupyter Notebook Sat 14 January 2023

Manipulating text with query expressions in Django Sat 07 January 2023

Using tqdm with concurrent.fututes in Python Fri 06 January 2023

2022

Colon command in shell scripts Fri 23 December 2022

Faster bulk_update in Django Wed 30 November 2022

Installing Python on macOS with asdf Sun 13 November 2022

Save models with update_fields for better performance in Django Wed 09 November 2022

Python logging quirks in AWS Lambda environment Thu 20 October 2022

Dissecting an outage caused by eager-loading file content Fri 14 October 2022

Auditing commit messages on GitHub Thu 06 October 2022

To quote or not to quote Wed 05 October 2022

Returning values from a shell function Sun 25 September 2022

Verifying webhook origin via payload hash signing Sun 18 September 2022

Recipes from Python SQLite docs Sun 11 September 2022

Prefer urlsplit over urlparse to destructure URLs Sat 10 September 2022

Pick random values from an array in SQL(ite) Fri 02 September 2022

ExitStack in Python Sat 27 August 2022

Compose multiple levels of fixtures in Pytest Thu 21 July 2022

Patch where the object is used Mon 18 July 2022

Partially assert callable arguments with 'unittest.mock.ANY' Sun 17 July 2022

When to use 'git pull --rebase' Thu 14 July 2022

Apply constraints with 'assert' in Python Sun 10 July 2022

Automerge Dependabot PRs on GitHub Thu 07 July 2022

Stream process a CSV file in Python Fri 01 July 2022

Bulk operations in Django with process pool Mon 27 June 2022

Read a CSV file from s3 without saving it to the disk Sun 26 June 2022

Distil git logs attached to a single file Tue 21 June 2022

Safer 'operator.itemgetter' in Python Thu 16 June 2022

Guard clause and exhaustiveness checking Sun 22 May 2022

Health check a server with 'nohup $(cmd) &' Mon 18 April 2022

Return JSON error payload instead of HTML text in DRF Wed 13 April 2022

Decoupling producers and consumers of iterables with generators in Python Sun 03 April 2022

Pre-allocated lists in Python Sun 27 March 2022

In favor of sentence case Sat 26 March 2022

Disallow large file download from URLs in Python Wed 23 March 2022

Declaratively transform dataclass fields in Python Sun 20 March 2022

Caching connection objects in Python Wed 16 March 2022

How not to run a script in Python Wed 16 March 2022

Mocking chained methods of datetime objects in Python Wed 16 March 2022

Declarative payloads with TypedDict in Python Fri 11 March 2022

Parametrized fixtures in Pytest Thu 10 March 2022

Modify iterables while iterating in Python Fri 04 March 2022

Github action template for Python based projects Wed 02 March 2022

Self type in Python Mon 28 February 2022

Patching test dependencies via Pytest fixture & unittest mock Sun 27 February 2022

Narrowing types with TypeGuard in Python Wed 23 February 2022

Why 'NoReturn' type exists in Python Mon 21 February 2022

Add additional attributes to enum members in Python Thu 17 February 2022

Peeking into the internals of Python's 'functools.wraps' decorator Mon 14 February 2022

Limit concurrency with semaphore in Python asyncio Thu 10 February 2022

Amphibian decorators in Python Sun 06 February 2022

Go Rusty with exception handling in Python Wed 02 February 2022

Variance of generic types in Python Mon 31 January 2022

Create a sub dictionary with O(K) complexity in Python Sun 30 January 2022

Gotchas of early-bound function argument defaults in Python Thu 27 January 2022

Use 'assertIs' to check literal booleans in Python unittest Mon 24 January 2022

Static typing Python decorators Sun 23 January 2022

Inspect docstrings with Pydoc Sat 22 January 2022

Check whether an integer is a power of two in Python Fri 21 January 2022

Uniform error response in Django Rest Framework Thu 20 January 2022

Difference between constrained 'TypeVar' and 'Union' in Python Wed 19 January 2022

Don't wrap instance methods with 'functools.lru_cache' decorator in Python Sat 15 January 2022

Cropping texts in Python with 'textwrap.shorten' Thu 06 January 2022

String interning in Python Wed 05 January 2022

2021

Structural subtyping in Python Sat 04 December 2021

Automatic attribute delegation in Python composition Sun 28 November 2021

Access 'classmethod's like 'property' methods in Python Fri 26 November 2021

Don't add extensions to shell executables Tue 23 November 2021

Use '__init_subclass__' hook to validate subclasses in Python Sat 20 November 2021

Running tqdm with Python multiprocessing Thu 18 November 2021

Use daemon threads to test infinite while loops in Python Thu 18 November 2021

Use 'command -v' over 'which' to find a program's executable Tue 16 November 2021

Write git commit messages properly Thu 11 November 2021

Python's 'functools.partial' flattens nestings Automatically Mon 08 November 2021

Use curly braces while pasting shell commands Mon 08 November 2021

Use strict mode while running bash scripts Mon 08 November 2021

2020

Pedantic configuration management with Pydantic Mon 13 July 2020

Interfaces, mixins and building powerful custom data structures in Python Fri 03 July 2020

Deciphering Python's metaclasses Fri 26 June 2020

Implementing proxy pattern in Python Tue 16 June 2020

Effortless API request caching with Python & Redis Mon 25 May 2020

Untangling Python decorators Wed 13 May 2020

Effortless concurrency with Python's concurrent.futures Tue 21 April 2020

No really, Python's pathlib is great Mon 13 April 2020

Running Python linters with pre-commit hooks Mon 06 April 2020

Generic functions with Python's singledispatch Sun 05 April 2020

The curious case of Python's context manager Thu 26 March 2020

Reduce boilerplate code with Python's dataclasses Thu 12 March 2020