I am implementing gabor kernels, when I display the kernels while running the code (before saving them) they give me a picture like this But after saving the kernels as jpg images using cv2.imwrite, I get like that Any explanations? and how to save the kernels as in the first image? Answer There could be diff…
Why list.append() in Python changes every item in the original list?
I have this piece of code: The output of this code: The output I was expected: How to get the expected output? Answer When you modify j and subsequently append it to the l, it’s a reference to the same dict that you append. Here is one way to operate on copies:
How to install djangorestframework-gis-distance
I am on Ubuntu and I tried to install djangorestframework-gis-distance I followed the instructions and installed the dependencies which installed fine. But when I install djangorestframework-gis-distance it gives an error of Which basically says I think that there is no file called pip.req. Is there another w…
K-Fold cross validation for Lasso and Ridge models
I’m working with the Boston housing dataset from sklearn.datasets and have run ridge and lasso regressions on my data (post train/test split). I’m now trying to perform k-fold cross validation to find the optimal penalty parameters, and have written the code below. What can I do to resolve this is…
Pygame functions having two brackets
Why does pygame.dispay.set_mode(()) and other similar functions has two braces instead of one and why it isnt working if i just put only one brace? Answer The display mode gets a tuple with two items to describe the resolution for the render-screen. And a tuple will be defined by When using the default you ju…
How can I avoid for-loops using pandas?
Would love to know how to optimize this code without using for-loops, if it’s possible. What I’m trying to do is to categorize all the values in series df[‘Состояние’] looking at key words in lists list_rep and list_dem one by one. Thank you! Answer Use Series.str.lower fiirst, then Se…
Python string replace containing “”
I would like to convert a string temp.filename.txt to temp.filename.txt using python Tried string replace method but the output is not as expected Answer is a special character, which is represented as \, this doesn’t mean your string actually contains 2 characters. (as suggested by @saipy, if you pri…
Django Extending User Model – Inherit Profile Form from Model
I am following a tutorial to do this in Django 3.1.7. The problem I’m having here is I’m being forced to repeat my Profile Model in my Profile Form definition. I want to use forms.ModelForm in my forms.py to inherit my Profile Model and auto-generate the forms. It seems redundant to have to spell …
ValueError: Mime type rendering requires nbformat>=4.2.0 but it is not installed
I was trying to print a plotly plot in Visual Studio Code and caught this error: The code I used: I tried pip install nbformat in the console following this feed on GitHub and this question on stackoverflow but it did not work. However, it seems the code could run with the last 2 rows removed: Answer Method 1…
Pyplot start x axis at negative values
I am trying to plot a piecewise function, but at the moment I am getting an error message when I try to start my x values at a negative. The code works fine if I run the following (albeit with only one part of the function): But when I change the first line to I get thrown the error message: