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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44 views

Implementing FUSE for deduplication

I am new to FUSE and using python-fuse for writing a file system for data deduplication. Let's say, I have a directory named "metadata" and in that directory, there is a file foo and a directory ...
4
votes
1answer
389 views

What is the historical reason why Python uses the double underscore for Class Private members

In python a module private function or variable is named _foo. If it is private to a class it is names __foo, The mechanics behind how these work are different, however that is of little relevance to ...
2
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3answers
394 views

Is Python suitable for a statistical modeling application looking over thousands of past events?

I'm currently working on a project with a partner where we analyze large datasets of past sporting events. There are approximately 30,000 events per year and we have historical data for five years. ...
4
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4answers
408 views

Communicate to a junior developer about bad style

I have a friend who's managed to pick up comma first (best case might be made here: http://ajaxian.com/archives/is-there-something-to-the-crazy-comma-first-style) but it's 100% against our org's style ...
1
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1answer
970 views

Using python to parse log files? [closed]

My first useful projects as a programmer has been python scripts that parse out relevant information from log files and do some analysis. I've bumped around and found my way to some functional ...
1
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1answer
80 views

How to comment on a PEP?

Proposals for new Python features are collected in documents called PEPs (Python Enhancement Proposals). There's a master list at http://www.python.org/dev/peps/ which links to (for example): ...
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1answer
334 views

Python for a desktop app

I currently have a .NET app that I want to convert to being cross platform, as a growing number of my users want a Mac version. Since this forum doesn't seem to like questions that are "what ...
2
votes
2answers
597 views

Front-end structure of large scale Django project

Few days ago, I started to work in new company. Before me, all front-end and backend code was written by one man (oh my...). As you know, Django app contains two main directories for front-end: ...
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0answers
295 views

Django web app with websockets

I want to make a web service using Django, but that also has websocket functionality. Having done a bit of reading, this is the tech stack that I'm looking at: --------------------------------- ...
0
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2answers
288 views

How can I convince my client that the task was complex and the time I took is fair?

I am the single programmer working on a website handling both frontend and backend. Recently in my task list I have to provide a social news feed (activities among friends) which should summarize ...
0
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1answer
111 views

return Trivial booleans?

I am writing a simple piece of code. Its a function that allowed the user to withdraw some money. There are some restrictions to this though. The user can't withdraw more than the given withdraw ...
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0answers
76 views

Distributing Contestant Entries Between Multiple Bins, Is this Knapsack?

I am an algorithm novice and am faced with a rather difficult problem. I am working with contests. There are contestant - individual player entry - contestants can have multiple entries into a ...
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2answers
1k views

Python - assert vs if & return

I am writing a script that does something to a text file (what it does is irrelevant for my question though). So before I do something to the file I want to check if the file exists. I can do this no ...
0
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1answer
162 views

Why can python webapps keep sessions between restart and not java?

I've used both webapp2 + GAE for python and a number of Java/JEE webapp frameworks. The python WSGI framework could keep users logged in while I redeploy the app while none of the Java web framework ...
0
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2answers
144 views

What are and how do (data-) types work?

What is a "variable"/data type? How does a compiler / interpreter handle types? My specific concern has to do with the different types in lower and higher level languages. For instance in Python, ...
0
votes
1answer
53 views

Verify 0 or 2+ sub sections in a section

There is a rule in writing: When you break a section into subsections, typically it should have more than one subsection. This goes back to the old high school composition rules: if you have an A. ...
16
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8answers
1k views

What are good unit tests to cover the use case of rolling a die?

I'm trying to get to grips with unit testing. Say we have a die which can has a default number of sides equal to 6 (but can be 4, 5 sided etc.): import random class Die(): def __init__(self, ...
0
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0answers
88 views

Approach to statically analyze a Python code base

What approach should I use to statically analyze a Python code base? In particular, I am looking for ways to: extract and display the class hierarchy, extract and display class relationships, ...
3
votes
2answers
125 views

Inform caller or just let them deal with exception?

I'm not sure how to proceed in the following situation. say we have a function as so: def runsATask(codes): myDicts = [helperFunc(code) for code in codes] for item in myDicts: # some ...
5
votes
4answers
728 views

Why doesn't Haskell have a 'format' function for string interpolation?

I'm trying to use Shake and I stumbled upon the following problem: there's no easy and convenient way to interpolate a string. I know about Text.Printf — it's not what I'm looking for. The ...
7
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3answers
1k views

Python - 'if foo in dict' vs 'try: dict[foo]'

This is less a question about the nature of duck typing and more about staying pythonic, I suppose. First of all - when dealing with dicts, in particular when the structure of the dict is fairly ...
-2
votes
1answer
245 views

Extracting data from log files

I will be extracting certain bits from log files using regular expressions to filter out bit of data. Initially I was going to do this with Python. I later started to think about the fastest way I can ...
3
votes
2answers
156 views

Automated testing of programs with graphical output

I am a lecturer for a post-graduate module where I expect my students to write Python code that replicates examples from the textbook. The project has been running for a couple of years and this year ...
18
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3answers
1k views

Why do so many languages treat numbers starting with 0 as octal?

I've read Where are octals useful? and it seems like octals are something that were once upon a time useful. Many languages treat numbers preceding with a 0 as octal, so the literal 010 is actually ...
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2answers
108 views

Is there a way to efficiently allow a user to upload multiple content at once for e-commerce type sites?

Sellers on large sites like Amazon and Newegg need to provide names, descriptions, and images for their products to be displayed on the e-commerce sites. These sellers could have 10000+ products to ...
1
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2answers
177 views

Documenting/defining data structures in Python

What is the preferred way to document the contents of and logic behind dynamically generated data structures in Python? E.g. a dict which contains the mapping of a string to a list of lists of ...
3
votes
2answers
215 views

What are the advantages of dynamically binding a method to class instance?

I came across Instagram's API client written in Python. In their class InstagramAPI, they bind the methods to a function in bind.py. When called, the function returns an instance of the class ...
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5answers
357 views

How to create a Python interview question to write a method

If I'm giving an interview coding question in Java, I can specify the most of the question just by giving a method signature. (Made-up example follows.) public class Table { public String ...
0
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0answers
169 views

Extending user registration in Django site that uses both site admin tables and my own module?

I'm writing a Django site that registers a particular type of user and this is done by the resources that come with the framework, the site administration. The issue: I'd like to create a new model ...
3
votes
3answers
189 views

conditional expressions, correct usage

I've recently become quite taken with conditional expressions in Python. Apparently some people consider it unpythonic and whether or not conditional/ternary expressions are even A Good Thing seems to ...
1
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1answer
100 views

Additional actions in setup.py for install

Background So, I'm developing a project, and I'm writing setup.py script for it, using distutils. I'm using CPython3.3. I use some libraries that have invalid distributions in PyPI, so they have to ...
4
votes
3answers
433 views

Which is better API: table.add_row() or table.rows.add()?

I'm writing a library to create and manipulate Word .docx files in Python. In general, I take a lot of influence from the Microsoft VBA/C# API for Word in designing the API, figuring they've given it ...
4
votes
3answers
312 views

Python: How to decide which class' methods should provide behavior (functionality) affecting multiple classes

I have a question about object oriented design that is not specific to Python but since my code is in Python, I tagged it as such. How do I decide which of my classes should be responsible for ...
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2answers
270 views

Google App Engine overview

I have gone through many Google App Engine tutorials, and I became quite familiar with how to do basic stuff like implementing a webapp2.RequestHandler, and using ndb.Models to manage your data. Now, ...
1
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4answers
626 views

How should you cleanly restrict object property types and values in Python?

I have been learning python from no long time ago. But nearly at the beginning I stumbled on simple question: how to set a restriction (limitation) on object value or object's properties without ...
3
votes
2answers
285 views

Writing a unit test for a platform dependent unit

I have a method to be tested which depends on the OS, what's the best approach for testing the method depending on the OS? Is it to test on every OS that I have I require? Is there a better approach ...
0
votes
2answers
1k views

Model-View-Controller — Where does a factory class go?

I'm working (slowly) on a small Flask project. One of my models is a class called Post, which is a lightweight namedtuple. Post objects are created by a PostFactory, because creating a Post involves ...
4
votes
3answers
212 views

Python - defining exit method before importing

This breaks nothing (in my experience), but lots of things "don't break anything" and are still wrong. #! /usr/bin/env python """Short description of this module.""" def ...
0
votes
3answers
289 views

What is the difference between 'code readability' and 'language conventions' used within a community? [closed]

When I'm looking at questions asked on sites like stackoverflow on how to make a particular piece of code "more pythonic" there are usually suggestions offered to use complex list comprehensions or ...
1
vote
2answers
167 views

How can I automate the process of code review

I have a team that works on multiple technologies. I want to know how can I automate the process of code review for .Net, .Net MVC, Python, PHP, Drupal and HTML5/CSS with JavaScript. I have read ...
1
vote
1answer
123 views

How do we pass data between two Amazon instances?

I'm trying to create a website where the user enters a few numbers, these numbers are fed into some equations, and the output of these equations is emailed to the user. I'm using Python 2.7 for ...
1
vote
2answers
165 views

Is using os.environ to store the value of command line switches pythonic?

I write CLI-executable Python 3 scripts regularly to do data compilation and some maintenance tasks, and try to adhere to PEP 8 and the Google Python Style Guide when doing so. Google's guide says to ...
0
votes
2answers
105 views

How to make the leap from classification to clustering

I have a clustering problem which I can't seem to solve, although if I treat it as a labeled classification problem, I can solve it with satisfactory precision. Is there an elegant way to make the ...
0
votes
1answer
142 views

Python: Counter for Simultaneous calls of a PHP script?

I'm trying to create a queue processing script that's purpose is to find particular files and apply actions based on specific parameters, with the result being to call a PHP script that serves to ...
0
votes
1answer
278 views

processing Postfix log with python

I need to process all log messages from Postfix (/var/log/mail/mail.log), and print a summary/statistics (how many emails were sent/received and from/to which email addresses) The situation is made ...
0
votes
3answers
196 views

Tips for developing a mobile app with a team [duplicate]

I am currently a high school student, I've been assigned to manage a group in my school to develop a mobile app and the problem is that all of us have no experience in making a project in a team and ...
2
votes
1answer
268 views

Python garbage collection giving me a hard time

Context: I am developing a web application using webapp2 web-framework with python to be hosted on GAE. The web application (web-app from now on), is a chess variant. Being a first timer, I have ...
4
votes
2answers
353 views

Is using static-typing the solution to domain-driven design and decreasing the number of errors?

We are using PHP (a dynamically-typed language) in our project. However, I have found my colleagues asking questions such as ...
4
votes
1answer
370 views

Will loop constructs become obsolete? [closed]

By loop constructs I mean for… and while… constructs with nested statements. Currently I am coding a tool in Python and decided out of curiosity not to use the regular loops - and rely on ...
2
votes
2answers
374 views

What was the need of introducing Python 3 when we already had Python 2 [duplicate]

I am still learning python and I started with Python 3. This question not Python 2 vs 3 or difference between them like print() is a function and not language construct and 3/2 = 1.5 My question is ...