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Showing posts from April, 2023

AttributeError: Object Has No Attribute 'user_loader'

I'm programming a Website with Authentification while using the Flask Framework. I've tried… Read more AttributeError: Object Has No Attribute 'user_loader'

"Handling Signal: Ttou" Message While Running DAG In Airflow

I have created sample DAG, where I had DAG config as below. default_args = { 'owner': &… Read more "Handling Signal: Ttou" Message While Running DAG In Airflow

Why Doesn't A Local Name With A PhotoImage Object Work, For A Tkinter Label Image?

I have created a python class which inherits Tk from tkinter library. I want to add a label with an… Read more Why Doesn't A Local Name With A PhotoImage Object Work, For A Tkinter Label Image?

Bokeh: Chart From Pandas Dataframe Won't Update On Trigger

I have got a pandas dataframe whose columns I want to show as lines in a plot using a Bokeh server.… Read more Bokeh: Chart From Pandas Dataframe Won't Update On Trigger

Recurrence Plot In Python

I am trying to clusterize paterns in time series as I ask in How to clustering syllable types with … Read more Recurrence Plot In Python

Adjacency List And Adjacency Matrix Are Able To Logically Present A Non-linear Data Structure

how adjacency list and adjacency matrix are able to logically present a non-linear data structure, … Read more Adjacency List And Adjacency Matrix Are Able To Logically Present A Non-linear Data Structure

Trying To Download A Csv File With Data After Running A Search Query Using Python 3. Don't Know If The Code Works

Is this the correct code to run the search query and download the resulting csv file (you have to c… Read more Trying To Download A Csv File With Data After Running A Search Query Using Python 3. Don't Know If The Code Works

Converting Tiff To Jpeg In Python

Can anyone help me to read .tiff image and convert into jpeg format? from PIL import Image im = Ima… Read more Converting Tiff To Jpeg In Python

Python's Multiprocessing.Pool Process Global Scope Problem

How can I change a global variable STOP to True? As I understand, the problem is with the scope of … Read more Python's Multiprocessing.Pool Process Global Scope Problem

How To Remove Special Characters From Txt Files Using Python

from glob import glob pattern = 'D:\\report\\shakeall\\*.txt' filelist = glob(pattern) def … Read more How To Remove Special Characters From Txt Files Using Python

How To Make Sprite Move Upwards And Downwards With Joystick In Pygame

I am trying to create a project that I have made before but apart from this time I am going to be u… Read more How To Make Sprite Move Upwards And Downwards With Joystick In Pygame

Using Word2VecModel.transform() Does Not Work In Map Function

I have built a Word2Vec model using Spark and save it as a model. Now, I want to use it in another … Read more Using Word2VecModel.transform() Does Not Work In Map Function

Regex To Match Scientific Notation

I'm trying to match numbers in scientific notation (regex from here): scinot = re.compile('… Read more Regex To Match Scientific Notation

Can't Automate Login Using Python Mechanize (must "activate" Specific Browser)

I seem to have difficulty logging into a website, which requires browser authenticaton. What happen… Read more Can't Automate Login Using Python Mechanize (must "activate" Specific Browser)

Custom Python Charmap Codec

I'm trying to write a custom Python codec. Here's a short example: import codecs class Tes… Read more Custom Python Charmap Codec

How To Increase Contrast When Plotting A Netcdf Using Imshow In Matplotlib?

Is there a way to increase contrast when plotting data (from a netcdf) using imshow? In ArcMap this… Read more How To Increase Contrast When Plotting A Netcdf Using Imshow In Matplotlib?

Python: How To Make List With All Lowercase?

I am new to this whole python and the data mining. Let's say I have a list of string called dat… Read more Python: How To Make List With All Lowercase?

PyCharm Errors For Valid Python Code

I posted the following question regarding nose and parameterized tests: use-class-method-in-nose-pa… Read more PyCharm Errors For Valid Python Code

Simplest Way To Set Up Python Logging To Stdout

I have the following to set up a basic logger to print output in a cron job: import logging log=log… Read more Simplest Way To Set Up Python Logging To Stdout

Pygame: Centering Text System Font Text

I have read this post about centering text: Pygame - How to Center Text However instead of importin… Read more Pygame: Centering Text System Font Text

How Do I Change Column Content Based On Previous Row?

Apologies. Whenever I try to make them into tables rather than into code it seems to think I have a… Read more How Do I Change Column Content Based On Previous Row?

Skip Numpy __new__ In Ndarray Subclass (or Possibly Overriding/defining Classes In C Or Cython)

Ultimate goal: have isinstance(MyClass(), np.ndarray) and issubclass(MyClass, np.ndarray) both retu… Read more Skip Numpy __new__ In Ndarray Subclass (or Possibly Overriding/defining Classes In C Or Cython)

How Can I Solve "process Finished With Exit Code 139 (interrupted By Signal 11: SIGSEGV)" In Opencv - Cv2 ( Pycharm & MacOS)?

I am learning OpenCV but I meet some difficulties, cv2 import is fine but it got error with cv2.ims… Read more How Can I Solve "process Finished With Exit Code 139 (interrupted By Signal 11: SIGSEGV)" In Opencv - Cv2 ( Pycharm & MacOS)?

How To Convert Request.data To Dict?

I try to get JSON data from client using this line (requests library) POST request: request.data H… Read more How To Convert Request.data To Dict?

Selecting Trainable Variables To Compute Gradient "No Variables To Optimize"

I am trying to select a subset of the trainable variables, the ones in the first and second hidden … Read more Selecting Trainable Variables To Compute Gradient "No Variables To Optimize"

How To Get List Installed Linux Rpms With Python?

I use subprocess.getoutput('rpm -qa').split('\n'),it's not very well. rpmfile m… Read more How To Get List Installed Linux Rpms With Python?

Plotting 2D Kernel Density Estimation With Python

I would like to plot a 2D kernel density estimation. I find the seaborn package very useful here. H… Read more Plotting 2D Kernel Density Estimation With Python

Conditionally Binning

Is it possible to create a new column in a dataframe where the bins for 'X' are based on a … Read more Conditionally Binning

How To Compare Lists Of Words And Strings, Then To Print Full String That Contains Word Using Python?

Compare 2 lists in python. First list contain words and second list with strings/lines. If any word… Read more How To Compare Lists Of Words And Strings, Then To Print Full String That Contains Word Using Python?

Rotating Vertices About Point

I'm reverse engineering a level map for a game. Each object within the level has 3 floats for p… Read more Rotating Vertices About Point

Construct Image From 4D List

I have a list of size (10,10,3,64) This represents a list of 64 images of size 10x10x3 I want to cr… Read more Construct Image From 4D List

Converting Pandas DF Into Special Dictionary?

I have a DataFrame with customer_id, date, product_id that they bought. I want to convert this Data… Read more Converting Pandas DF Into Special Dictionary?

Parse And Process CSV In Django

Apologies in advance since I'm new to Django (and I've also had to freshen up my Python ski… Read more Parse And Process CSV In Django

Python How To Update Scrapy To 0.22

I am working with python 2.7 with scrapy 0.20 I would like to try scrapy 0.22, how to do that pleas… Read more Python How To Update Scrapy To 0.22

How To Insert Dynamic Data In Sqlite3 Using Python

enter code here import sqlite3 conn = sqlite3.connect('tutorial.db') c = conn.cursor() d… Read more How To Insert Dynamic Data In Sqlite3 Using Python