Python is a dynamic, high-level language. Its design focuses on clear syntax, an intuitive approach to object-oriented programming, and making the right way to do things obvious. Python supports modules, exceptions, had an extensive standard module library. Python can also be embedded in other ...

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4
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153 views

How should private dependency links be handled in setup.py

At work we use a private pypi server. This pypi server is specified as a dependency link: ... from setuptools import setup config = ConfigParser.ConfigParser() rc = os.path.join(os.path.expanduser('~...
3
votes
0answers
86 views

How to think about a schedule that pulls from a database as objects

I am working on a personal project using Python. I have been using version control to the best of my abilities and if you would like to check it out and run the app https://github.com/CodeAmend/old-...
3
votes
0answers
91 views

Method object creation in Python data model

I've been reading the article on the data model of Python on its Reference website, and have been confused about this part: When the attribute is a user-defined method object, a new method ...
2
votes
0answers
51 views

Are there any generic algorithims or Python functions to help find the longest item in a JSON document?

I am trying to log a JSON error message to Google's Cloud Logging platform. Unfortunately, the maximum size message you can log is 8000 bytes and some of the JSON documents I want to log are larger ...
2
votes
0answers
94 views

How should I represent to-be binary data?

I'm writing some serialization code, and I'm wondering how to deal with binary data. As I'm doing it in Python, my goal is to make it very simple, not require a lot of programmer overhead, etc. Three ...
2
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0answers
53 views

Assess the quality of third party python packages

I'm developing a application in Python and I've found various packages on pypi which appear to be what I need. However, how do I know I can trust these lesser known packages - it only has a couple ...
2
votes
0answers
78 views

Reducing conditional code makes assessing coverage or debugging difficult

Working in Python, I've written a few utilities to assert pre-conditions and to re-interpret exceptions, and have found my code doesn't have so many branches. I've also tried to move other code path ...
2
votes
0answers
458 views

How to Use Python as a “Macro” runner for a C# Application

I am working on an application that the user may wish to automate some features of (but we don't know what at the moment) I would like to provide them some kind of scripting interface so they can play ...
2
votes
0answers
532 views

How does the Zope Component Architecture (ZCA) relate to Service Component Architecture (SCA)?

I'm very new to the principle of Service Component Architecture and Zope in general, but the more I look, the more ZCA seems to be a good solution for a certain class of problems I often encounter. I ...
2
votes
0answers
172 views

The Python module-as-singleton hack

I've seen (and once used) this idiom a few times in Python: # At the end of a module: if __name__ == '__main__': main() # or whatever your entry point looks like, this line isn't important else: ...
2
votes
0answers
214 views

The inheritance argument of zope.interface (providedby vs isinstance)

What limitations does inheritance of an interface through an abstract base class present that are addressed by zope.interface? In the following talk given in 2010 by Jeff Rush about interfaces, at 11:...
2
votes
0answers
393 views

Gevent - Make blocking calls non-blocking

I have the blocking code shown below. Is calling monkey.patch_all() enough/optimal to make it non-blocking? Does Gevent handle iterations like these? # front page def front_page(): database = ...
1
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0answers
85 views

How random are these numbers?

I am making a script for creating true random numbers. I use APIs from RANDOM.ORG and ANU QRNG. The method I have is I get a number from one of the sites and use it as a seed in the Mersenne Twister ...
1
vote
0answers
37 views

Facebook Login vs Python Social Auth (or django-allauth, etc.)

Background: I'm creating a mobile app using an API built with Django using Django REST Framework and hosted on Heroku. In the past, I've used Python Social Auth with this setup to authenticate users ...
1
vote
0answers
30 views

How would I identify a gap in a set of curve data, and get its value?

I have a set of 2-D data (x,y) and it produces a set of curves, and sometimes the set of curves do not overlap, and there is a distinct separation between the groups of curves, how would I identify ...
1
vote
0answers
53 views

Calculating the multiplicative inverse of a number in a Galois field

I was told to come here from Stack Overflow because I was "looking for an algorithm". I'm trying to implement it in Python, but there is nowhere on the net that gives a straightforward way for ...
1
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0answers
82 views

Why my greedy algorithm not working for merge stone problem

Merge Stone Problem: You have n piles of stones in a line. For example, [4, 1, 2] means 3 piles of stone, the first pile has 4 stones, the second pile has 1 stone, and so on. You task is to merge ...
1
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0answers
79 views

Does PyPy or Jython run untrusted Python 3 code more secure while still being fast?

I know that one can not securely restrict normal CPython's capabilities to properly run foreign code without allowing it to access some builtins like open() or allowing other kinds of I/O. So I ...
1
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0answers
31 views

Python: architecture implications of using external subprocess or API

I maintain a Python 3 package (ocrmypdf) that works with other programs primarily by making subprocess calls. This is partly for historical reasons – it is shell script that grew up. I have since ...
1
vote
0answers
34 views

How do I minimize the number of database queries in a GeoJson API (of countries, and smaller areas) with custom data?

The general version of the question is above - a a little more detail, I am using Django Rest Framework, but am happy for answers to be dealing with the problem in abstract. So, I have data with ~200 ...
1
vote
0answers
135 views

Is the logic behind `Asyncio.wait()` and async/await, the same, just the code is written differently (syntax)?

I'm learning Python, more specially parallel programming using Python Parallel Programming Cookbook by Giancarlo Zaccone. At the time the book was published async/await was still in the beta version ...
1
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0answers
75 views

How to re-use a very small Python utility across different applications?

I have a very small utility that has proven itself very handy across a multitude of applications. The utility itself is less than 50 lines of code and is its own Python module, and a number of ...
1
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0answers
80 views

How can I improve my websocket server's structure/flow?

I'm building a websocket server in python and I've hit a block regarding my program's flow and structure. Here's what I'm doing at the moment. The program creates a instance of 'server' and listens ...
1
vote
0answers
395 views

Calculating uncompressed file size without uncompressing file in zlib

I am writing a python program which parses zip (currently only zlib, using DEFLATE compression) files and verifies the correctness of their headers and data. One of the things I'm trying to achieve is ...
1
vote
0answers
100 views

Code structure with MongoDB in python

I am new to MongoDB and python. I know how to make basic use of pymongo in order to manipulate documents. I am having trouble finding how to create some structure or governance in what gets inside ...
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0answers
37 views

Finding the largest bundle of flagged points

I am currently working to develop a program that takes in an array of 4 columns and around 200,000 rows. Each column represents x, y, z (coordinates), and a flag denoting whether or not this point is ...
1
vote
0answers
225 views

Structuring a multi-language project?

I'm working on a project which involves writing code for multiple devices, each in its own language (in particular, Arduino and Python). I want to contain the entire project in a single directory, but ...
1
vote
0answers
108 views

Need to add websocket support to a single page that's running a wsgi service

Current setup. I have a legacy ERP system (Thoroughbred) and i then have several in house applications (CRM, WMS) and a website that interact with it via an xml server and straight ODBC connections. ...
1
vote
0answers
78 views

Improve communication between controller and trackers in a Twitter fetcher tool using RabbitMQ or Apache Flume

I've been working for a time with some researches developing a tool to fetch tweets from Twitter and process them in some way. The first prototype "worked" but became a pain as we used sockets to ...
1
vote
0answers
2k views

Best practices to parse a log file using Python

I'm writing a Python tool to parse a log file from game server. The log file is of format: ms:classname::id::method::arg1::arg2.... There are a lot of classes, and a lot of methods for each class, ...
1
vote
0answers
375 views

Why does pkg_resources not find bloom in my virtualenv?

I'm trying to hack on the ROS bloom build system (https://github.com/ros-infrastructure/bloom). After I've made some edits, I build it and install it to a virtualenv to test using python setup.py ...
1
vote
0answers
111 views

Inheritance and constricted referencing

Let's say I have BaseA and BaseB classes. BaseB can have to several references of BaseA instances. Now, we have two other classes, DerivedA and DerivedB that respectively inherit from BaseA and BaseB. ...
0
votes
0answers
13 views

Web app with a Node.js front end interefacing with a python script with sockets

Right now I have a webpage with various buttons and options that I'd like to use to send commands to a python script running on the webserver. The python script is being used to interface with devices ...
0
votes
0answers
33 views

Download latest Excel files from a website regularly

First, I'll try and describe my problem, then I'll explain how I am trying to get around it. Problem: I regularly download excel files from the internet, this occurs every three months. There's a ...
0
votes
0answers
31 views

Optimal Simplification of Transposition Products

I am looking to take a product of a large number of transpositions, and boil it down to a smaller number of products. I have the following code, and would like some input on efficient ways to boil ...
0
votes
0answers
84 views

Planning dinner seating, having each person sit with as many other people as possible, changing tables between each course

My project is as follows: I am making a program for planning dinner seating that will take a number of courses, a number of tables, and a list of people. The goal is to have each person sit with as ...
0
votes
0answers
20 views

Difference between RAISE and RETURN HTTPResponse in bottle framwork

I am using Bottle framework to implement API's. There is code return before I started, and they use from bottle import HTTPResponse @api.get('/some/api/url') def some_method(...): ... ... ...
0
votes
0answers
42 views

Modeling a cookbook recipe with django

I'm trying to model recipes in a cookbook. Here's what I have so far: class Recipe(models.Model): title = models.CharField(max_length=255) class Ingredient(models.Model): class Meta: ...
0
votes
0answers
41 views

Dynamic programming vs branch-and-bound for the knapsack problem

I have to implement a program that solves the 0-1 knapsack problem, where the weights and values of all items are nonnegative integers. We went over two methods in class: dynamic algorithms (...
0
votes
0answers
46 views

How and where should I put a version number in my Django project?

I'm making a Django project consisting of several apps and I want to use a version number for the whole project, which would be useful for tracking the status of the project between each time it comes ...
0
votes
0answers
96 views

How do I replicate my object-ish style from Python into Golang?

I've been going around in circles on this for a while Googling and reading, time to ask experts. When coding my common approach is to create a type of thing and add it to some sort of list with ...
0
votes
0answers
48 views

Deciding on a Portable Platform (given a set of requirements)

Background Before asking this question, I researched this site and found the following 3 most similar questions have already been asked: When would using a scripting language within a larger program ...
0
votes
0answers
75 views

Class design of keyboard interpreter to execute commands

I'm designing a keyboard interpreter that will map typed characters to a (or many) command(s) via a hierarchical menu-style structure, taking into consideration testability (ideally TDD). However I'm ...
0
votes
0answers
53 views

How to distribute a project with all its dependencies?

We are developing a system for a customer that does not want to allow installation of packages from outside repositories. The project is in Python and defines its dependencies via setuptools; most of ...
0
votes
0answers
28 views

How can word lists be used as supervised data in finding the score of the report?

We have got historical reports and we need to find the score (whether report is effective or useful or not) based on supervised learning. While doing the supervised learning process, we have to ...
0
votes
0answers
134 views

Why use Python's asyncio with coroutines to implement a server

I use Python's asyncio library to create a server that can handle telnet requests. Because asyncio's server loop is single threaded, I thought it would make more sense that when asyncio tells me that ...
0
votes
0answers
17 views

How do I write a loader library for a Python-based KIO slave

I'm trying my hand at writing a KIO slave and chose python because, well, that's what I know. There's even a decent example here Then here it tells you that for Python you need a C loader library ...
0
votes
0answers
87 views

Reusing models and classes with blueprints with flask

Designing a content management system using Python/Flask. I have a blueprint module called pages [app/pages/..]. Pages contains the title, description and content. It can be queried using /pages/&...
0
votes
0answers
16 views

How much additional specialised functionality should I bundle with my main flask application?

I am building a custom content management system (i.e. html, some js) for a project using Flask/Python. As things have progressed, I have seen that I need to add: Some AJAX for interactivity. ...