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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27 views

Problem with quicksort and python [migrated]

I'm writing a python program that plays poker for a class, and I need to sort a list of five card hands. I have a function called wins(), which takes two hands and returns True if the first one beats ...
1
vote
1answer
46 views

When should one create a new py-function rather than tweaking another one?

Me and a co-developer are arguing when it's wise to cast a new function rather than tweaking another one. By tweaking I mean an option or a hidden check in an existing function. The question could be ...
-3
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0answers
33 views

Algorithm to make sum of elements equal zero [on hold]

I want to make sum of elements in this array equal zero array = [[1, 2, 1], [1, 2, 1]] Need sum of columns and rows equal zero array = [[1, -2, 1], [-1, 2, 1]]
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0answers
4 views

How would you search a dictionary and print out entries with same value [migrated]

I've been a little confused on how you would go about this, so what would be a good way to do it. For Example: If I had this as my dictionary dic = [{1:Dog, 2:Cat}{1:Bird, 2:Rat}{1:Turtle, 2:Cat}] ...
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votes
1answer
34 views

Django urls.py runs only once. Why? How does it call views on next request?

While testing django cashing on our development server, one of our senior asked if is it possible to change the value of caching timeout on urls.py without restarting the http service. On first note, ...
2
votes
1answer
65 views

Python beginner question with Assigning Variables

Coming from C# and now getting my hands dirty with Python. From what I understand, Python is strongly typed: http://stackoverflow.com/questions/11328920/is-python-strongly-typed As stated in the ...
0
votes
0answers
123 views

How to web scrape [on hold]

So I am using a raspberry Pi for displaying calls to our fire department on a big screen. It works great but I want to customize the display. Currently, it takes the information from a webpage that is ...
-2
votes
0answers
88 views

Most concise solution in Golang for Cheryl's birthday problem [closed]

I found the Python code found on this page somewhat fascinating for its brevity https://news.ycombinator.com/item?id=9375643 What would be the most succinct way to code the same logic in Go? import ...
-4
votes
0answers
11 views

Is it possible to install llvmlite Python package on Cygwin? [migrated]

When I try installing llvmlite Python package on cygwin, I get the following errors. GINMF in this case. I'm currently using Cygwin 1.7.35(0.287/5/3), Python 2.7.8, and Windows 7. $ pip install ...
-3
votes
0answers
22 views

Python … Strip carriage returns / line feeds from database records before they are written to csv [closed]

I have the following code that reads lines from a database and writes the matching results to a csv file. The problem I am running into is there are occasionally carriage returns / line feeds in some ...
-2
votes
0answers
30 views

Using Operations on a List in Python and Aggregating Results in New List [migrated]

I have a list of numbers, all of which need to be divided by the same number. I can do this, no problem, but how do I create a new list featuring these new quotients? I have tried: for n in numbers: ...
-3
votes
2answers
71 views

How do I fix this if statement? [closed]

Trying to create a program that runs if statements to find the maximum and minimum of the five numbers inputted by the user. I run this code and I keep getting that A is the maximum. a = ...
0
votes
0answers
52 views

Matching groups of similar lines on a generic matching algorithm

I have to write a program to search through a file containing lines and find lines that match to a degree of tolerance but are not necessarily the same. So for example the following lines would match: ...
1
vote
0answers
75 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 ...
0
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0answers
30 views

Python socket programming for Webserver [migrated]

I have created a proxy server that receives requests, searches for the requested file in its cache. If available it returns the cached file. If file is not available then it will ask the actual ...
0
votes
0answers
24 views

Designing a task dispatcher for making API calls

In my application, I have a list of users and associated timestamps (with 10 minute granularity): [(u1, t1), (u2, t2), ...]. There are about 10 million such tuples and I need to make an API call to a ...
0
votes
0answers
25 views

Common to include pre-built binaries for supporting build tools? [duplicate]

As part of a Visual Basic 6 project, I have created a python script to provide a CLI to building the project/docs. However, I realize that not all developers who will have access to this project will ...
0
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0answers
207 views

What's an elegant way for one loop iteration to affect another? [migrated]

I needed to process a config file just now. Because of the way it was generated, it contains lines like this: ---(more 15%)--- The first step is to strip these unwanted lines out. As a slight ...
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votes
1answer
149 views

Check distance between all elements in a list of numbers in O(n*lg(n))

I have an exercise for my algorithms and data structures class, where I basically have to implement a divide and conquer algorithm or function called check_distance to determine whether all numbers in ...
0
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0answers
21 views

Is Python Logging in a WSGI application a best practice a production environment?

I am trying to log my webpage access to a database. It is a requirement. It seems to be a difficult thing to do outside of Windows IIS, and I do not wish to use Python with IIS. My options seem to ...
0
votes
0answers
16 views

How to access objects in lists? How to create many sequentially named objects at once? [migrated]

Im new at python and programming in general, so forgive me if this question is painfully simple. I could not find an answer using google. Anyway, I want a long list of checkbuttons and entries. I ...
0
votes
0answers
34 views

Extending the interface of existing (python) classes

I use a library with an existing well-defined interface, that I have extended for my purposes. I.e. most classes in that library inherit of one abstract base class class Parent(object): def ...
3
votes
1answer
65 views

Structure project based on platform or design?

I have a medium sized project (~10,000 lines) that runs on Windows and Linux. However it is only specific components of the program that are platform dependent and are located in a folder called ...
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votes
0answers
16 views

How can I pass String value from EditText In Android Activity to Python Script and also retrieve the result from a function in the python script? [migrated]

How can I pass String value from EditText In Android Activity to Python Script and also make the activity able to retrieve the String result from a function in the python script such as displaying ...
1
vote
1answer
120 views

What is ## used for?

I have looked at other questions about this and the general consensus seems to be that ## is used for commenting out code. However, in the Interactive Editor for Python, prefixing a line with ## ...
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votes
1answer
56 views

Program design - how to improve it and how to avoid coupling (Python)?

In the Python program structure below there are two modules with functions. Problem description: Functions are used inside other functions all over the place. Strong coupling (dependency). For ...
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votes
0answers
21 views

How can I make a Python function examine every element of a list? [migrated]

I was ordered to build a Bulean Function that takes a list of numbers and execute "True" if the list is a proper grade list(i.e every number is between 0 to 100) and "False" otherwise. I however ...
0
votes
1answer
77 views

Python, namespace vs module with underscores

I'm developing a project that uses several independent modules, but all related to the same project. However, I face this choice: module names with underscore vs. namespaces. For example there is ...
0
votes
1answer
35 views

Aggregate documentation comments from multiple scripts into README?

After having written some python scripts with comments for documentation inside, is it a good idea and possible to aggregate the documentation comments from multiple scripts into some standalone ...
2
votes
3answers
82 views

Preferred way to expand a command line script to be used as a library in Python

I have a useful Python script that I've been invoking from the command line. It has decent number of options, maybe 20, and it's not unusual to run the script with six or seven flags. Then the rest of ...
8
votes
4answers
1k views

Write two versions of class with two different super classes without violating DRY?

I have a class called LimitedDict which is a dictionary that limits the number of entries it can contain by deleting old entries when a new one is added. It currently inherits from Python's dict ...
0
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0answers
56 views

Ordering of methods in class [duplicate]

How do you order the methods in your classes? I am aware of the alphabetical approach and the telling a story approach and so far I prefer the story approach, but how do you handle private/helper ...
3
votes
3answers
112 views

How to write tests for function that depends on a config file?

I have a function that uses information from a config file. How do I test the function? Ideally, I'd want to inject my own version of the config file and test from there, but I'm not using dependency ...
0
votes
1answer
45 views

Is it OK to use name like `CLASS_CONSTANT` for class constant variables according to PEPs? [python]

On the code I'm viewing, I saw a class like this: class User(ModelBase): """# User: docstring""" COMBAT_RANK_KEY_PREFIX = 'combat_rank' LEVEL_RANK_KEY_PREFIX = 'level_rank' ...
4
votes
1answer
872 views

Should I avoid using style like `for k, v in dict_sample.items()`?

Today I was viewing my colleague's code and I saw a function like this: def manager_skill_tree_func(*args, **kwargs): """# manage_skill_tree: Initialize the manage skill tree """ ...
2
votes
0answers
48 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 ...
1
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2answers
119 views

Efficient datastructure to create size-limited dictionary

I need a class that acts like a dictionary but will constrain the total number of key/value pairs it contains. For instance, let's say the maximum number of entries is 1000 and the class already ...
0
votes
1answer
107 views

Does the phrase “range for R1-1 through R10H” actually have an agreed-upon meaning?

I was recently sent a code test by a potential employer to complete on my own time. The first question has to do with identifying whether a given zoning code falls within a range of codes. I'm not ...
1
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0answers
45 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 ...
0
votes
2answers
58 views

How do I find out what type of exception I am supposed to raise?

I suppose this question is valid for any programming language that can handle (or at least throw) an exception. However I will stick to Python as an example. The top 2 answers to the following ...
0
votes
0answers
60 views

Algorithm for the Simplication and Evaluation of Equations

As a new programmer messing around in python, I've been playing about with writing small programs which can calculate some of the stuff I did in maths at school. I've been trying to think of a way ...
1
vote
0answers
148 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
2answers
209 views

Don't repeat yourself vs do only one thing in a method

I am currently writing some test cases in python. I often end up calling the same two or three lines of code at the start of a test case in order to get the program I am testing going. For example: ...
3
votes
3answers
176 views

closure property of datatype “tuple” in python

From this link, below is the slide that I would like to understand: The Closure Property of Data Types A method for combining data values satisfies the closure property if: The result of ...
1
vote
1answer
88 views

adding the digits of a number

I am trying to write a program that asks the user for a decimal number and then calculates the sum of its digits. for example if the number is 123.25 then the sum will be 1+2+3+2+5=13. I decided to ...
-4
votes
1answer
85 views

Understanding If Statement Syntax in Python [closed]

I've recently started learning python, I'm using Python 3.4. I'm trying to understand If-Else statement syntax x=2 if x: print(x) But I'm always encountering this Error IndentationError: ...
4
votes
1answer
72 views

When should I subclass an exception in Python?

In my code there are about seven places where I raise an exception. All of these exceptions are treated the same: print an error to log file, return software state to default and exit. During code ...
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votes
0answers
34 views

python: area mapping using trigonometric circle

I have a car controlled by a raspberry pi, I would like to create maps to each place it visits. The solution I came up with is simple. Lets say you tell the car to go forward and then after 5 minutes ...
4
votes
3answers
161 views

Is it good Python style to write a function that has no effect other than potentially raise exceptions?

Sometimes I find myself writing Python code that looks like this: def check_stuff(param): if condition1(param): return "condition1" # These might be enum values, etc., instead of strings ...
0
votes
0answers
24 views

Strategy for “multi-level equality” test

It is well-known that Lisp supports multi-level equality test. I want to implement similar multi-level equality test on a custom class in Python. I know that I can (and should) override the __eq__, ...