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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15
votes
7answers
7k views

Would Python be too slow for client-side use in Browsers?

I've heard the statement that Python would be too slow to be of any use in browsers. I reckon Javascript is only superior in this aspect because of companies like Google who need it fast (and made it ...
6
votes
1answer
191 views

UI Design patterns for non-screen based project

I'm working on a small project coded in Python that uses a single button for input and a RGB LED as feedback, which responds to button presses and asynchronous events from the network. As the ...
1
vote
1answer
105 views

Is Python's calendar.month_name implementation of an empty string in the first index good practice or poor design?

The documentation states: An array that represents the months of the year in the current locale. This follows normal convention of January being month number 1, so it has a length of 13 and ...
4
votes
2answers
173 views

Extract name of return variable from Python function

I have a python function x that returns some module x(): return y I would like to parse the file x is located in and learn that "x returns this thing called 'y'". I have no idea how. I'm not trying ...
2
votes
1answer
51 views

Should I be taking these as arguments or define them in a sub class?

So I am making a mario clone in pygame and I have a base class Character and two sub classes, Mario and Luigi. The methods that the Character class defines require a significant amount of attributes ...
1
vote
0answers
55 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 ...
2
votes
1answer
120 views

Patterns for sharing context variables between functions

I am looking for ways of passing around a set of contextual variables that are required by functions. As a Python programmer, right now I can see three ways of solving the problem: passing them ...
8
votes
2answers
4k views

Why does Python use hash table to implement dict, but not Red-Black Tree? [closed]

Why does Python use hash table to implement dict, but not Red-Black Tree? What is the key? Performance?
0
votes
1answer
39 views

Ways of embedding static data with python application

I have several projects on Python I am currently versioning with Git. I also have the input-output data that is gradually changing over the course of the project. I need to be able to re-run my ...
1
vote
2answers
87 views

Factored out loop control in Python

I have a for loop in python like this: for item in items: onwards = make_flow_decision(item) if onwards == 'break': break elif onwards == 'continue': continue elif ...
0
votes
1answer
112 views

Can I listen on a port without interrupting traffic?

I have developed the bare bones on a socket server in Python. I'm trying to capture the HTTP packets going to a web server without blocking them. try: self.socket = ...
0
votes
1answer
285 views

Best strategy for converting change in longitude and latitude to north, south, east, west in degrees

This is not a class assignment but a conceptual question I'm struggling with for a personal project. I need to convert a large paired group of long and lat coordinate values that show a ...
0
votes
1answer
81 views

How to properly handle indefinite generators in Python

Let's say we have a generator that is indefinite, where new elements can arrive at any moment with significant (up to indefinite) delay. An example of such generator is tail -F command. In python ...
0
votes
2answers
165 views

How should I structure these Python classes?

Base Class I have a class called Remote. This class represents a remote machine and has properties such as ip, hostname, username, and password, as well as methods for transferring files to/from the ...
3
votes
3answers
655 views

Is this OOP class hierarchy too deep?

So I am making a Super Mario Bros NES clone in pygame and for all enemies that are drawn to the window, I have a class hierarchy that is 5 classes deep. Going in the order of: Object (A base class ...
2
votes
2answers
259 views

Which programming idiom to choose for this open source library? [closed]

Which programming idiom is easier to use for beginner developers writing concrete file parsing classes? I'm developing an open source library, which one of the main functionality is to parse plain ...
1
vote
2answers
257 views

using one database connection across multiple functions in python

whats the best way to go about this in python? I have a number of like so def test1() .... code ..... def test2() .... code ..... def test3() .... code ..... how could I create one ...
1
vote
1answer
217 views

Could there be a use case for C# style auto-properties in Python

I've been doing a lot of work in C# recently (my primary language is Python) and I love that I can do something like public string MyProperty{ get; set; } Going back to Python I miss that sort of ...
0
votes
0answers
54 views

Writing a container that treats nearly-identical images as the same

I want to create a mapping in Python that will use images as keys, but treat similar (but not identical) images as the same key. I have an approach for deciding which images are similar enough: I ...
2
votes
1answer
219 views

Is there a better algorithm to distribute integer to X integers minimizing their difference?

Is there a better algorithm to distribute values from one source to X destinations minimizing their difference? I have some source integer. I need to know how much of that value I need to distribute ...
1
vote
1answer
38 views

How to represent alternative and sequential tasks?

I am experimenting with hierarchical task planning (in python) and I would like to have functions which return lists of tasks. I need to differentiate between alternative paths and sequential tasks. ...
0
votes
1answer
115 views

Optional text qualifier in CSV file as input to SSIS package

I receive several CSV files each quarter to process through an SSIS package, and the formatting is inconsistent. This quarter, I encountered what I term optional text qualifiers--text qualifer of ...
1
vote
2answers
134 views

Is there a better pattern than multiple inheritance here?

I'm working on a server implementation for a large game with many gametypes. There are several kinds of interactable entities: players, monsters, objects, vehicles. All entities share the same base ...
6
votes
1answer
2k views

Good practices for packaging Python programs

I've been using Python for a while now, both in the context of personal and professional projects. One thing that occured to me recently is that I had never thought about a good way to deploy Python ...
2
votes
1answer
50 views

log method calls per object

How to log method calls on a per object basis for a particular class? I.e. after instanciating a = myClass() I somehow want to keep a log for what methods have been called on a like a.reverse() ...
2
votes
2answers
171 views

Final steps of wrapping up a Python script into a program

I finished building a Python script containing eight functions which download files, extracts them, manipulate and analyze their data and then produce graphs and export them into PNG files. The ...
-2
votes
1answer
48 views

Move file into apropriate directory based upon first letter of second word, followed by the first two letters of the second word with Python [closed]

EDIT: Apparently the below question is too specific. Let me rephrase: I'm looking for a way to fit a letter into a list of specified ranges such that, if given the letter S and the ranges A-F, G-M, ...
2
votes
1answer
107 views

When should I use a generator and when a list in Python? [duplicate]

I often find it cleaner to write a generator than to return a list. For example, I prefer def my_func_gen(foo): for i in foo: # Do some stuff that's too complicated for a list or ...
-1
votes
2answers
166 views

Will statically typed, compiled programming languages be affected by Microservices Architecture? [closed]

Judging based on my experience, as systems grow bigger, statically typed languages like Java or C# tend to be more reliable and easier to manage. But do we need all the advantages of such languages ...
2
votes
1answer
86 views

Module level logger function

I've recently been assigned to a new project because I'm one of the only developers at my company who has used Python extensively in the past. My first task was to clean up the code base and make it ...
4
votes
2answers
7k views

What is the way to go to extract data from websites? [closed]

I've been thinking about a side project that envolves web data scraping. Ok, I read the Getting data from a webpage in a stable and efficient way question and the discussion gave me some insights. ...
2
votes
2answers
117 views

Is the function using python list comprehension, stateless?

Below is the function count_leaf, that appends mutable list branch_counts, which is not stateless. def count_leaf(tree): if is_leaf(tree): return 1 branch_counts = list() for b in ...
1
vote
1answer
89 views

Is async keyword an ultimate replacement for asyncio module?

Recently, there was a rise of interest toward asynchronous programming in Python community. First prominent expression of this interest was the appearance of Asyncio —codenamed Tulip— framework [PEP ...
0
votes
1answer
229 views

Python object oriented programming problems while implementing binary search tree

I am shifting from procedural C programming to OOP Python programming and I faced some problems while implementing binary search trees. I cannot make my Tree_Node null in case of deleting it. In C I ...
0
votes
2answers
188 views

Nested functions; allow or not? [closed]

Having programmed a whole lot in python, using nested functions is a good way to not clutter the namespace with small helper functions that are only used once. Now I'm programming in go, and upon ...
6
votes
3answers
2k views

What's the best way to create a static utility class in python? Is using metaclasses code smell?

Ok so I need to create a bunch of utility classes in python. Normally I would just use a simple module for this but I need to be able to inherit in order to share common code between them. The common ...
24
votes
5answers
17k views

Is it a good practice to declare instance variables as None in a class in Python?

Consider the following class: class Person: def __init__(self, name, age): self.name = name self.age = age My coworkers tend to define it like this: class Person: name = ...
3
votes
3answers
773 views

Why does Python need both a compiler and an interpreter?

I can understand the fact that Java needs both a compiler and an interpreter. It compiles source code to bytecode and then a virtual machine (on Windows, on Linux, on Android, etc.) translates that ...
1
vote
2answers
68 views

Compiling vs pre-built binaries on production machine?

I referred Compiling vs using pre-built binaries performance?. The post talks about performance and opportunities for optimization. My question is about reliability. I built both python and ...
3
votes
1answer
116 views

What is more pythonic - subclassing dict or creating external functions to manipulate them?

Say I have a dictionary that contains complex classes that need to be loaded and unloaded in a special way. (Not especially special, just outside the bounds of this question.) Should I gracefully ...
3
votes
3answers
249 views

Can you do iterative development in c#? [closed]

I'm primarily a Python/R developer. In those languages, the way I develop is to sketch out a data and class structure, write the methods and their tests in interactive mode, then refactor them up into ...
8
votes
3answers
442 views

How can I start shipping code?

I have just started learning how to program using LPTHW, and as my skill level develops I would like to start shipping code whether or not it's ready to be shipped, just to get into the habit of ...
1
vote
1answer
138 views

Function name in parentheses after fuction call in Python

I ran into these lines of code in the QPYTHON Android app. They are part of a sample that uses the Bottle module to create a simple Web server that seems to work fine. app = Bottle() app.route('/', ...
2
votes
1answer
267 views

What design patterns could be used here?

I'm trying to come up with a nice design (preferably pythonic) for the following use case. Say there's three services - A, B, C in multiple locations L1, L2, L3, etc. Each service provides ...
1
vote
0answers
173 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 ...
0
votes
0answers
125 views

Utilizing Python Slate for pdf text extraction from PHP

I want to use Python Slate module for PDF text extraction, and I have my code up and running for this. What I would like to know here is how to link my existing PHP MVC to utilize/make a request to ...
-1
votes
1answer
104 views

execute selection in console in C++ like python or R language [closed]

I am started to learn C++ using as IDLE Clion of jetbrain company. Normally using the IDLE of Python (i.e., Pycharm of Jetbrain) or R project i am able to execute selection in console line-by-line my ...
5
votes
3answers
631 views

What's special about “non-blocking” node.js?

In the short chapter, What is Node by McLaughlin, he writes: "Node has no blocks, no threads competing for the same resource (Node is happy to just let things happen however they happen), ...
11
votes
3answers
33k views

How to develop front end (UI) for my Django website

I am learning Django and new to web development. Please excuse me if you find this question too dumb. So, I am creating a Facebook application using Django which I would like to host in Google App ...
6
votes
2answers
438 views

Should serialization and deserialization be the responsibility of the class being serialized?

I'm currently in the (re)design phase of several model classes of a C# .NET application. (Model as in M of MVC). The model classes already have plenty of well-designed data, behaviors, and ...