Python Dictionary

I would like to format my integers as strings so that, without the sign, they will be zero-padded t… Read more Python String Formatting: Padding Negative Numbers

I'm using Python 2.7 and opencv version 2.4.2. I'm having trouble with a segmentation fault… Read more Python Opencv Feature Detector Causes Segmentation Fault

I have trained a Lightgbm model on learning to rank dataset. The model predicts relevance score of … Read more Product Feature Optimization With Constraints

I don't know if I am stupid but I have a small issue. I have a list list1 of lists. Like you ca… Read more Join List Of Lists The Proper Way

I'm struggling with trying to grasp this. I need to create a pandas DataFrame object with the f… Read more Python Read Specific Data From Text File

I have a three-levels Invoice model which I'd like to display on Django's admin area... in … Read more Django Admin: Inline Straight To Second-level Relationship

I am trying to pass a file descriptor through ctypes, to a C function where writes are performed o… Read more Passing A File Descriptor To A C Library Function Through Ctypes On Windows

I have data files containing lists of strings representing ISO formatted dates. Currently, I am rea… Read more Convert List Of Datestrings To Datetime Very Slow With Python Strptime

I am working on a project where I am using different masks on two different pictures and than would… Read more Masking Two Images And Merge Into One Image

I have the following DataFrame with two groups of animals and how much food they eat each day, df =… Read more Pandas Transform Position/rank In Group

I try simple code using subprocess on python, while calling process.stdout.readline() it will hang … Read more Python Subprocess.stdout.readline() Hang

I am trying to solve a pandas problem statement. The panda's data frame looks like this : impor… Read more Np.select With More Than Two Pandas Column

I'm trying to obtain an image from 3D array and convert it to TIF 3D. I'm using simple ITK … Read more Python - Write A Three Dimensional Image From 3d Array

I can't find any option, that would allow to set colspan for td element in rml. Is that somehow… Read more Reportlab: Setting Colspan For Td In Rml

This are previously defined functions def make_service(service_data, service_code): routes = [… Read more Write A Function That Makes Another Function Returns A List Instead Of Function

I have pretty simple problem. I have a large file that goes through three steps, a decoding step u… Read more Very Large Input And Piping Using Subprocess.popen

I'm writing a web scraper than needs to scrape only the thumbnail of an image from the url. Thi… Read more Temporarily Retrieve An Image Using The Requests Library

I know feature hashing (hashing-trick) is used to reduce the dimensionality and handle sparsity of … Read more What Is Feature Hashing (hashing-trick)?

Is there a way to set a new proxy ip (e.g.: from a pool) according to the HTTP response status code… Read more How To Detect Http Response Status Code And Set A Proxy Accordingly In Scrapy?

I am trying to mock AWS s3 api calls using boto2. I create local s3 endpoint using localstack and c… Read more Using Local Endpoint With Boto2