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Python, Sudoku, Optuna

profilehooks Decorators for profiling Python functions About Sometimes you want to profile just a single function in your Python program. The profilehooks module lets you do that very easily: #!/usr/bin/python from profilehooks import profile class SampleClass: @profile def silly_fibonacci_example(self, n): """Return the n-th Fibonacci number. This is a method rather rather than a function just to illustrate that you can use the 'profile' decorator on methods as well as global functions. Needless to say, th

# Characterizing Single-Statement Bugs in Popular Open-Source Python Projects Reviewed by Greg Wilson / 2022-03-11 Keywords: Bugs , Open Source , Python I spent most of an afternoon last week tracking down a bug caused by having two decorators stacked on a function in the wrong order. The fix was small, but the impact was not. Reading this paper has got me wondering how often this happens—how often it turns out that just one line in a program needs to change to make it right. Kamienski and colleagues se

Httpx vs Requests in Python. Performance and other Musings. Comparing the pypi requests vs httpx packages, who will fall on their face? Someone recently brought up the new kid on the block, the httpx python package for http work of course. I mean the pypi package requests has been the de-facto standard forever. Can it really be overthrown? Is this a classic case of “oh how the mighty have fallen”? I want to explore what the new httpx package has to offer, but mostly just …. which one is faster. That

The Architectural Foundation of Modern AI Pipelines Architecting enterprise Python AI integration pipelines requires a departure from the experimental

For example, how fast or slow is it to add an item to a list in Python? What about opening a file? Is that less than a millisecond? Is there something that makes that slower than you might have guessed? If you have a performance sensitive algorithm, which data structure should you use? How much memory does a floating point number use? What about a single character or the empty string? How fast is FastAPI compared to Django? I wanted to take a moment and write down performance numbers specifically focused o

ProgrammerAH Programmer Guide, Tips and Tutorial Menu Skip to content python multiprocessing.pool NameError: name is not defined Question The paper code encountered a problem similar to the following. After some efforts, it can be regarded as solving this problem. # import torch # # print(torch.__version__) # # print(torch.cuda.is_available()) import multiprocessing cores = multiprocessing.cpu_count() // 2 def b(xs): t = temp_num[xs[0]] * 2 return t def a(): global temp_num temp_num = [4, 5, 6] pool = multi

A bug in my operating system During a recent visit to my wife’s family in Sarajevo, I decided to revisit my hobby operating system in QEMU. I discovered that the boot process consistently froze while printing the BIOS memory map. What initially looked like a protected-mode issue eventually turned into a useful exercise in automating debugging using GDB’s Python scripting. Manual debugging failure After reinspecting some common pitfalls in my protected mode setup I was more confident that the issue was

Python, GUI, Python3, Tkinter