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Re: [Tutor] How to go about describing my software with a component diagram?
by marc nicole Dec. 25, 2024

Dec. 25, 2024

the purpose of the diagram is to convey a minimalistic idea about the structure of the code/implementation/software Le mer. 25 déc. 2024 à 01:49, Thomas Passin via Python-list < python-list(a)python.org> a écrit : > On 12/24/2024 3:42 PM, marc nicole via Python-list wrote: > > it is here https://i.sstatic.net/ykk5Wd0w.png > > This diagram does not make much sense to me: > > 1. What is the purpose of the diagram and who is it intended for? > 2. A module and an algorithm are different kinds of things, yet they are > connected together as if they are the same. > 3. Connecting lines should always be labeled, preferably with direction > indicators that augment the labels. Otherwise the viewer has to imagine > what the nature of the connection is. > 4. It's better if different kinds of things look different. That could > be a different box shape, a different color, or some other visual > difference. Here I am thinking about the box labeled "Algorithm". We > can't tell if it is intended to mean "A library module that implements a > certain algorithm", "An algorithm that the three components cooperate to > implement", "The top-level module for computing an algorithm that > contains three modules", or something else. > > -- > https://mail.python.org/mailman/listinfo/python-list >

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Re: [Tutor] How to go about describing my software with a component diagram?
by marc nicole Dec. 24, 2024

Dec. 24, 2024

it is here https://i.sstatic.net/ykk5Wd0w.png Le mar. 24 déc. 2024 à 20:03, Michael Torrie via Python-list < python-list(a)python.org> a écrit : > On 12/24/24 10:27 AM, marc nicole via Python-list wrote: > > the diagram is also attached here > > This text-only mailing list does not allow attachments, just FYI. > > -- > https://mail.python.org/mailman/listinfo/python-list >

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How to go about describing my software with a component diagram?
by marc nicole Dec. 24, 2024

Dec. 24, 2024

Hello community, I have created a Python code where a main algorithm uses three different modules (.py) after importing them. To illustrate and describe it I have created the following component diagram? [image: checkso.PNG] Could it be improved for better description and readability? Thanks!

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How to catch a fatal error in Python 2.7?
by marc nicole Dec. 10, 2024

Dec. 10, 2024

Hello, The fatal error exits the program with a code -1 while referencing the memory address involved and nothing else. How to catch it in Python 2.7? PS: please not I am not talking about exceptions but an error resulting from the disconnection of my bluetooth microphone abruptly and leading to the halting of the whole program, I need to be able to do something when it occurs. Thanks for the help!

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How to break while loop based on events raised in a thread (Python 2.7)
by marc nicole Nov. 27, 2024

Nov. 27, 2024

I am using the below class1 code to detect some event through the method check_for_the_event() # Some class1def check_for_the_event(self): thread1 = threading.Timer(2, self.check_for_the_event) thread1.start()# some processingif event is detected: self.event_ok = Trueelse: self.event_ok = False then I pass an instance of that class to the below class to know when the event is on or off and act upon its value accordingly using the following below code: # execution of other part of the program (where self.another_class_instance.event_ok = False and self.some_other_condition is true) current_time = current_time_some_cond = current_max_time = time.time() while not self.another_class_instance.event_ok and self.some_other_condition: while self.some_other_condition and not self.another_class_instance.event_ok:#self.some_other_condition takes up to 10 secs to be checked (minimum 5 secs) if time.time() > current_time + 5: current_time = time.time() # some processing else: while not self.another_class_instance.event_ok: #processing if time.time() > current_max_time + 60 * 2 and not self.another_class_instance.event_ok: #some other processing if time.time() > current_time_some_cond + 10 and not self.cond1 and not self.another_class_instance.event_ok: # some processing that takes 2-3 seconds self.cond1 = True current_time_some_cond = time.time() elif self.cond1 and time.time() > current_time_some_cond + 10 and not self.another_class_instance.event_ok: current_time_some_cond = time.time() #some other processing that takes 2-3 seconds else: pass else: pass The problem is the real time execution of the program (in class2) requires an instant check to be performed and that cannot wait until the current loop instructions finish, and I want is to break out of the outer while loop if the event is on without further checking any other condition. for now I perform multiple checks at each if or while statement, but is there a IO async based method that breaks out of the loop when the event is raised in the thread?

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Race condition, Pycharm Handling or something else with Queues and multiprocessing.ThreadPool?
by Balthazar Nov. 15, 2024

Nov. 15, 2024

Hi, I've been trying to understand ThreadPool and am having a funny time with it. The code runs through partly once and then finishes. However it is meant to repeatedly keep looping. The only way I've seem to get it to work is by running the code in debug on Pycharm and Stepping Over each line. So why do I think it is a race condition? Because there are still items in the queue before it exits but visually everything seems to be in order, so this becomes a lack of knowledge on my part to understand what is really happening. ---- start here--- import logging from queue import Queue, Empty from multiprocessing.pool import ThreadPool from multiprocessing import Event import time class MultithreadedPoolAndQueue: def __init__(self, available_modules): self.logger = logging.getLogger("Test_Program.MultithreadedPoolAndQueue") self.available_modules = available_modules self.logger.info("Multithreaded Pool and Queue Management Initialised") self.queue = Queue() self.pool = ThreadPool(processes=len(self.available_modules)) self.all_tasks_completed = Event() def unpack_results(self,results): filtered_results = [] for key, val in results.items(): if isinstance(val, list): for item in val: filtered_results.append({key: item}) else: filtered_results.append({key: val}) return filtered_results def fill_queue(self, data): for d in data: # Each data will be {DATA_TYPE: Data} self.queue.put(d) def parse_results(self, results): """ This function will need the filtered results. It will put the data onto the queue like this: {DATA_TYPE: Data} :param results: Results from function. :return: """ self.logger.info(f"Entering parse_results with: {results}") if results is None: pass else: unpacked_results = self.unpack_results(results) for result in unpacked_results: self.logger.info(f"Result added: {result}") self.queue.put(result) def error_call(self,e): self.logger.error(e) pass def thread_worker(self): max_check_count = 10 check = 0 loop_around = 0 while self.queue.empty() is False or loop_around < 2 and check < max_check_count: try: item = self.queue.get_nowait() # Assuming item is in the format {data_type: data} data_type = next(iter(item)) # Get the first (and only) key from the dictionary query = item[data_type] # Then for each module in available modules, apply an asynchronous system for module in self.available_modules: for module_name, module_class in module.items(): # Check if the module can handle this data type if data_type in module_class.accepted_data: module_instance = module_class() self.pool.apply_async(module_instance.event,args=(query, data_type),callback=self.parse_results,error_callback=self.error_call) loop_around = 0 check = 0 # Reset check counter on successful item processing except Empty: # If the queue is empty, wait for a short time before checking again time.sleep(0.1) check += 1 loop_around += 1 except Exception as e: self.logger.exception(e) loop_around += 1 # Wait for all async tasks to complete self.pool.close() self.pool.join() self.all_tasks_completed.set() def wait_for_completion(self): self.all_tasks_completed.wait() self.logger.info(f"Queue item: {self.queue.get()}") self.logger.info("All tasks have been completed.") ---- end here--- Here's how I've been using the code. ---- start here ---- threaded_core = worker_core.MultithreadedPoolAndQueue(self.available_modules) threaded_core.fill_queue(self.targets) threaded_core.thread_worker() threaded_core.wait_for_completion() ---- end here ---- If you require more code then let me know, thank you for any advice in advance.

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How to check whether audio bytes contain empty noise or actual voice/signal?
by marc nicole Oct. 26, 2024

Oct. 26, 2024

Hello Python fellows, I hope this question is not very far from the main topic of this list, but I have a hard time finding a way to check whether audio data samples are containing empty noise or actual significant voice/noise. I am using PyAudio to collect the sound through my PC mic as follows: FRAMES_PER_BUFFER = 1024 FORMAT = pyaudio.paInt16 CHANNELS = 1 RATE = 48000 RECORD_SECONDS = 2import pyaudio audio = pyaudio.PyAudio() stream = audio.open(format=FORMAT, channels=CHANNELS, rate=RATE, input=True, frames_per_buffer=FRAMES_PER_BUFFER, input_device_index=2) data = stream.read(FRAMES_PER_BUFFER) I want to know whether or not data contains voice signals or empty sound, To note that the variable always contains bytes (empty or sound) if I print it. Is there an straightforward "easy way" to check whether data is filled with empty noise or that somebody has made noise/spoke? Thanks.

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Python Security Survey - Your Expertise Needed!
by Reem Mutairy Oct. 13, 2024

Oct. 13, 2024

Hello Python Developers and Security Engineers, I’m Reem Almutairi, a Ph.D. student in Software Engineering at King Saud University. I’m conducting research to better understand the prevalence and impact of security vulnerabilities in Python, as well as the strategies developers use to mitigate these risks. If you have experience in Python and are familiar with security vulnerabilities, I’d greatly appreciate your input in this 10-minute survey. 👉 [ https://n9.cl/2ow2c [https://lh6.googleusercontent.com/2RkP1spcsyjz1WD_HnUioMUEHvWWna6Cn0HrU7U9V…]<https://n9.cl/2ow2c> Identifying Key Software Security Vulnerabilities (Security Smells) in Python Applications<https://n9.cl/2ow2c> n9.cl ] Also, if you know others who might be interested, please feel free to share the survey link with them! Your insights will help shape future security practices in Python development. Thank you in advance for your time and expertise. Warm regards, Reem Almutairi Ph.D. Student, Software Engineering King Saud University

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introduction to programming course
by José Miguel Blanca Postigo Jose Miguel Oct. 10, 2024

Oct. 10, 2024

Hi, I have been teaching a programming introductory course for a number of years using Python. This time I have prepared an interactive site for the students. https://bioinf.comav.upv.es/courses/intro_programming/ It is focused on examples and exercises, so not a lot of theory. I would welcome suggestions and fixes. This course might be useful for somebody in this list, but I am not sure if this is the correct place to inform the community about this resource, but since this is a list related to Python teaching I have thought that it might be the place. Sorry if this is not the intended use of the list. Best regards, José Blanca

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Signing off
by avi.e.gross＠gmail.com Oct. 9, 2024

Oct. 9, 2024

Just a final brief note. I am leaving the python community so don't worry that anything happened to me. I have a disagreement with the direction some people are taking with the python community that is my issue and it that probably will not bother most people. I have lots of other interests including many other programming languages and it is time I stopped using python when I have so much else to choose from. My best wishes to everyone here. Avi

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