Category "python"

How to get pandas to return the row index on which a CSV read error occurs

I have a CSV: '1\n2\na'. If I read it with something like pd.read_csv(io.StringIO('1\n2\na'), names=['A'], dtype={'A': 'float'}) specifying that the first colum

Combining various image channels after gaussian filtering produces white image

I am trying to implement a gaussian filter for an image with dimensions (256, 320, 4). I first generated a gaussian Kernel for the same and then individually pe

Check if substring with leading and trailing whitespaces is in string

Imagine I need to check if in longString = "this is a long sting where a lo must be detected." the substring lo as a word is contained. I need to use the leadi

Flink Python Datastream API Kafka Consumer

Im new to pyflink. Im tryig to write a python program to read data from kafka topic and prints data to stdout. I followed the link Flink Python Datastream API K

printing a board in python

I'm trying to create a chess game in python without uses pygame I know I'm not so far to finish it but I have a problem, I don't achieve to print my board in a

Setting Data Frame Column Names with Data Frame includes extra characters: ('ColumnName',)

I've got a python script set to pull data and column names from a Pervasive PSQL database, and it then creates the table and records in MS SQL. I'm creating dat

How to plot a marker around eye region according to face landmarks of mediapipe Python

The question is how to find the eye coordinate using the multipipe library and place a marker at the left,right, top, and bottom of each of the eyes using cv2 l

Bloom Filters with the Kirsch Mitzenmacher optimization

I have recently started playing around with Bloom Filters, and I have a use case in which this calculator suggests to use 15 different and unrelated hash functi

Vaex copy columns between dataframes

I have a dataframe that I performed a filter on and then added some virtual columns. I wish to add those columns back in with the original data frame. Here is m

Trying to handle an error but cannot do it! Telegram

I have made a telegram bot using pyrogram to upload a large video and the the progress bar is shown, however the progress bar is repeatedly edited message with

How to view images from folder in flask web app?

I had this issue when I first started on most of the pictures, only one showed on my web page so I uploaded the pictures to a google drive and used each url. It

What is the python equivalent for names() function in R

I have a code in R, where in the data frame "inputdata" there are multiple columns, and we are replacing the word "new" with "old" in the entire data frame: nam

.py files in google colab

How can upload and run .py files in Google Colab? I can open the file as text and run it after copying, but I want to know if there is a way I can upload the .p

Flask SQLAlchemy: many to many relationship error

I am trying to set up many-to-many relationship in SQLAlchemy but I am getting the error: from shopapp import db db.create_all() sqlalchemy.exc.NoReferencedTab

How I can only print the visible cells (filtered) in a column with openpyxl

I am working with a excel sheet and want to print only the value of cells which are visible in a particular column. Below is the example, I'm expecting it to pr

Python API Call: JSON to Pandas DF

I'm working on pulling data from a public API and converting the response JSON file to a Pandas Dataframe. I've written the code to pull the data and gotten a s

ValueError: Data cardinality is ambiguous (x sizes: 60000 y sizes: 10000 Make sure all arrays contain the same number of samples.)

I'm using mnist dataset for my project on VsCode IDE. Following is the complete code. what is it that I'm doing wrong and how can I solve this error? # Import L

S3 appending random string in file name

I have a s3 folder with a csv file stored on it. I'm trying to download the last modified file. I'm using this script to get the last modified file: s3_client =

python: what is a best way to find paths with x length in 2d array?

Assume that I have an array like this [[0, 1, 0, 0], [1, 0, 2, 5], [0, 2, 0, 0], [0, 5, 0, 0]] each index is a node index so [0, 1, 0, 0] means node0 has a edge

How to mock a method inside a @singleton decorated class in python

The class itself calls in the init method a get_credentials method, which does I need to mock. Using unittest for mocking; from unittest import TestCase, mo