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Questions tagged [python-2.x]

Python 2 is the predecessor of Python 3 and its last version, Python 2.7 was formally released on July 3, 2010. Use this tag along with the main python tag to denote programs that are meant to be run on a Python 2 interpreter only. Do not mix this tag with the python-3.x tag.

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8
votes
2answers
77 views

log setup using RotatingFileHandler and basicConfig

I am new to python, and developing a moderate application for which I need to setup a logging mechanism. The below program sets up log handling, which gives the user an option to specify whether log ...
1
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1answer
85 views

Bank database program

I have been trying to improve my Python coding and was just wondering if there was a more pythonic way to perform what I have done so far, namely around the date in the ...
2
votes
0answers
22 views

Interactive, real-time bikeshare web application with Bokeh

As a side project, I'm working on a Bokeh web application to display public bikeshare data on a map. The data is updated every 2 minutes using a periodic callback. Below is the full implementation. I'...
3
votes
0answers
41 views

Python script that getting list of all files with specific ext starting from the current folder. Using timer for reporting about the process

I am using a function that returns a list of all files (full path for each of them) with the given extension in the given folder and all subfolders. As the process is quite long and user can get ...
3
votes
3answers
583 views

Bifurcating recursive calculation with redundant calculations

def T(n): if n <= 0: return 1 else: return T(n-1) + (n-1) * T(n-2) print T(4) I need an effective way to print out the output of the function <...
0
votes
0answers
16 views

Reproduce Hashing and pbkdf in newer versions? (python2)

I found this old code in one of the old files of mine which I have converted into Python3 but not very much satisfied and cannot reproduce the whole thing especially decoding it in check_password ...
5
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0answers
72 views

Simple chat server in Python

I'm new to both Python and socket programming and figured setting up a simple chat server would be good practice. In addition to general critiques of the code, I have specific questions: What are the ...
6
votes
4answers
285 views

Decrease Computation Time for Python Tic-Tac-Toe Minimax Algorithm

Background I am currently participating in a tic-tac-toe coding challenge. During their move, each participant is given the board state and their team, X or O. The blank board is: ...
3
votes
1answer
36 views

Parse backslash-delimited hierarchy path into separate columns

I have rows in a database table with a hierarchypath column. The values in the column are hierarchy paths with up to four levels: ...
1
vote
2answers
220 views

Python Regex to validate an email

I have written this regex to validate an email. It seems to work fine. Can someone advise on the regex used? Does it work properly or can be done in a better way? ...
2
votes
1answer
121 views

Determine if points are within a rotated rectangle

Using only Python 2.7 and the standard library (no imports): Determine if a point is inside the rotated rectangle. ...
11
votes
3answers
920 views

Finding the prime factors of a number in Python 2

I’ve created a function that takes a number and, if it’s prime, tells you so, or if it’s composite, gives you the prime factors of the number (and if it’s 1, tells you that it’s neither). ...
1
vote
1answer
91 views

LeetCode 839: Similar String Groups III

I'm posting my code for a LeetCode problem. If you'd like to review, please do so. Thank you! Problem Two strings X and Y are similar if we can swap two letters (in different positions) of X, so that ...
2
votes
0answers
66 views

Find the available squares for rooks in empty board using boolean arrays

I will describe two techniques, then the question will be how I can make an algorithm that is more efficient, if possible. I want to find an efficient way to determine the squares where the pieces on ...
2
votes
1answer
65 views

Part 2: Create or update record via HTTP request

This script was previously reviewed here: Part 1: Create or update record via HTTP request I've made the changes that were suggested by @Reinderien. Now that the code has been significantly refactored,...
5
votes
1answer
168 views

Part 1: Create or update record via HTTP request

Update: This is an older version of the question/script. The new version can be found here: Part 2: Create or update record via HTTP request I have an external system that sends an HTTP request to a ...
2
votes
1answer
63 views

Updating a dictionary of trajectories after a step has been made

I am using a dictionary to save possible trajectories in a game. A trajectory is defined as a list of numbers separated by _. For example ...
2
votes
1answer
115 views

Python - Do I need a class or are these functions okay?

I'm fairly new to Python but had to start using it and for reasons I have to use 2.7, which is why I am using that syntax. I have this function which gets data from a file, if it exists, and then gets ...
0
votes
1answer
68 views

Image color-moment extractor [closed]

I was just wondering if there is a way to speed up the performances of this for loops in Python. I'm trying to process an image to get the color-moments without using libraries. It takes about 12sec ...
6
votes
3answers
820 views

Prime sieve generator

I wrote a simple prime sieve in Python. But it ended up looking... ugly. I included a few of the most basic optimizations. When posting this question SE suggested a bunch of questions on the same ...
1
vote
1answer
32 views

Selecting minimal sum of two distinct entries of two dicts with common keys

Can this function simplified? The goal is return one key from each dictionary (both contain the identical keys), so that the sum of the values that belong to the selected keys are minimal (and also ...
2
votes
1answer
94 views

Linux bonding status check

I have created the below code which works for me, but I feel there might be a better way to accomplish this in a new Pythonic way or better Python syntactic way. Code snippet: ...
1
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2answers
81 views

Better pythonic way to pass condition to multiple functions [closed]

I have the following scenario where most of my functions require to return different things based on a condition. ...
-1
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1answer
2k views

Foo Bar - Power Hungry challenge test case failing on unknown edge cases [closed]

The challenge is to find the maximum product of a subset of a given array. Here's the problem: Write a function solution(xs) that takes a list of integers representing the power output levels of ...
3
votes
1answer
78 views

Estimation of min_samples for DBSCAN

I'm attempting to speed up some python code that is supposed to automatically pick the minimum samples argument in DBSCAN. Currently the execution time grows exponentially as the number of training ...
2
votes
2answers
118 views

Python - Hexadecimal to Decimal conversions

I have written a python 2 program for a school project to convert from hexadecimal to decimal without using built-in functions and vice versa in python. I would like to know how I can make my code ...
3
votes
0answers
100 views

Store special deals, like 3 for 2

I have to apply two deals on the cart. Buy 3 (equal) items and pay for 2 Buy 3 (in a set of items) and the cheapest is free Items in cart: ...
1
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0answers
49 views

Reading attachment data from a PostgreSQL table with python

I have developed this script to find the counts of attachment records stored in a table in PostgreSQL for different other tables. I check if the res_id field of <...
1
vote
1answer
192 views

Reading employee data from a PostgreSQL database

I have developed this script to read employee_language table records of a PostgreSQL database using Python 2 (due to some OS limitation). I want to find duplicate ...
2
votes
1answer
38 views

Reload polyline midpoints into parallel tables

I have an Oracle GIS database that has spatial tables. The records in the spatial tables have a geometry column that contains polylines. I've written a Python 2.7.16 script that calculates the ...
6
votes
0answers
59 views

Python - Displaying messages in ArcPy/IDLE

I have created a wrapper for displaying messages with ArcPy and IDLE (as that is all I have available to myself due to certain circumstances) as I frequently use both to test and develop new tools. ...
1
vote
1answer
42 views

Executing Scipy Tensor Product [closed]

Can anyone advise on how to use the SymPy TensorProduct function without having to explicitly indicate the full sequence of objects to take the product of. Below (for the simple case N=3) you can see ...
2
votes
1answer
118 views

Weaving multiple lists into one

I have this code to weave the split_input ['5,4 4,5 8,7', '6,3 3,2 9,6 4,3', '7,6', '9,8', '5,5 7,8 6,5 6,4'] together. However I feel like this can be done more ...
0
votes
1answer
88 views

Pyg Latin Translator [closed]

I have a code for a short Python 2 Pig Latin translator. Is it a good code, or should it be revised? ...
5
votes
0answers
113 views

Python Project Template

What's up smart people. A little backstory for context: I'm a completely self taught dev, and the only person ever looking at my code for the past 6 years is myself. I realize that's not the best idea ...
2
votes
1answer
307 views

Simulate Tic-Tac-Toe game in Python

Simulate a tic-tac-toe game Requirements A player is picked at random as a first player. The two players plays tic tac toe game. The game ends when the board is full or either one of the player ...
6
votes
1answer
167 views

Universal string conversion

Below there is a function eating all strings and convert it to Unicode. It works fine. But is it the best way to do so? Is there maybe already an existing function for it? The reason was a German ...
2
votes
1answer
185 views

An imitation of reading a C Struct from binary file in python 2.7

Preliminary I need to read a binary file constructed by writing a Struct to it with Python. So I decided to write a simple wrapper using ...
1
vote
0answers
81 views

AWS plugin to create a CloudFormation stack if it doesn't exist

The following Python class is what I am trying to refactor in the case where I have to add validation of the existence of an AWS cloudformation stack before creating it in the method create_cfn_stack :...
1
vote
3answers
41 views

`set_includes` (string subsequence-containment) in Python 2

I've implemented C++'s std::includes algorithm in Python, so that I can use it to efficiently implement a Scrabble "can I make this word" function: ...
4
votes
2answers
195 views

Print a pattern of text based on a line from an Excel file

I started to learn Python not long ago to automate certain tasks I work on. I want to optimize a script I wrote that takes a line in an Excel file and prints a pattern of text based on this line's ...
1
vote
1answer
93 views

Django view of reward points that heavily filters and sorts (many) database results

My page (even when it has no data) takes 10+ seconds to load. That's just too long, considering when you finally get to it there's no data. When it has data, it takes even longer. Here is my view, ...
5
votes
2answers
137 views

Program to delete directories that do not contain a file

I'm an intern and have an ETL project I'm doing in python. Part of it is to make sure after I move files I delete empty directories. I wrote this code to clean up directories that are empty and in ...
1
vote
1answer
3k views

Reading a long file and getting sum of chars by multithreading

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6
votes
2answers
821 views

Guttag's Finger Exercises: Enter 10 integers, find largest odd integer and print result

I'm making my way through the Intro to Computation and Programming test by John Guttag and he gives these small exercises to practice gearing up into computational thinking. As of Ch.2, we've covered ...
3
votes
0answers
155 views

Animation of an incremental rotary encoder

While reworking my teaching materials for an exercise of an introductory course on mobile robotics, I recently created a animation/simulation of an incremental rotary encoder, e.g. often used for ...
2
votes
0answers
83 views

Extract cell values from multiband rasters

I have the following function and code snippet to extract cell values for multiple years, format it, and save to a list. Each raster has 365 bands — one for each day. A separate operation is performed ...
4
votes
0answers
42 views

Combining CSV files of simulation results

This script is a subset of a larger script where I have the output of many test simulations in the form of CSVs. Each file starts with the model name and includes the number of elements in my file. ...
7
votes
2answers
1k views

Count reoccurring elements in multiple lists in Python

I have a number of names divided into several lists. I am printing all the names which occur in more than one list, sorted by the number of occurrences. What is a better/easier/more pythonic way of ...
5
votes
1answer
114 views

Run a command for all files in a directory

I have a program that needs to run an command on all the files in a folder: ...

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