I am trying to install dependencies using pip3 command current scenario: I have no idea why my pip3 command is not working. I have tried things like this: Answer You’ve got a whole slew of different Python installations, plus at least one former Python installation that you deleted. Situations like this…
Tag: python
How does pytorch broadcasting work?
produces a Tensor with size: torch.Size([4,4]). Can someone provide a logic behind this? Answer PyTorch broadcasting is based on numpy broadcasting semantics which can be understood by reading numpy broadcasting rules or PyTorch broadcasting guide. Expounding the concept with an example would be intuitive to …
Recreate POST request with WebKitFormBoundary using Python’s requests
I am attempting to scrape some data from a website using a POST request with the Python requests library. Unfortunately I am unable to post a link to the page as you must be signed in to the website to site to use it. The request I am trying to replicate has the file extension .ehtml and this is part
python nltk — stemming list of sentences/phrases
I have bunch of sentences in a list and I wanted to use nltk library to stem it. I am able to stem one sentence at a time, however I am having issues stemming sentences from a list and joining them back together. Is there a step I am missing? Quite new to nltk library. Thanks! Answer You’re passing a
How can I generate and display a grid of images in PyTorch with plt.imshow and torchvision.utils.make_grid?
I am trying to understand how torchvision interacts with mathplotlib to produce a grid of images. It’s easy to generate images and display them iteratively: However, displaying these images in a grid does not seem to be as straightforward. Even though PyTorch’s documentation indicates that w is th…
how to reverse the URL of a ViewSet’s custom action in django restframework
I have defined a custom action for a ViewSet And the viewset is registered to url in the conventional way The URL /api/users/gender/ works. But I don’t know how to get it using reverse in unit test. (I can surely hard code this URL, but it’ll be nice to get it from code) According to the django do…
Pandas Multiindex to CSV without duplicate Index
For the life of me I can’t figure out how to remove the duplicate index items created when writing a multiindex dataframe to CSV. While there is this answer out there, it doesn’t apply to me per se because my second level has all different values. This is a chunk of the dataframe I have, it just g…
Why spectrogram from librosa library have twice the time duration of the actual audio track?
I am using the following code to obtain Mel spectrogram from a recorded audio signal of about 30 s: Obtained spectrogram: Mel spectrogram Can you please explain me why the time axis depicts twice the time duration (it should be 30 s). What is going wrong with the code? Answer You need to pass the sampling rat…
pandas create new column based on row value (condition)
i have a column like this, i need to create a new column based on a condition, if the a[i] and a[i-1] is same, then value is 0 else 1. result should look something like this: The right pandas way to do it? Answer Create boolean mask by sompare for not equal by ne with shifted Series and cast to
OpenCV’s `getTextSize` and `putText` return wrong size and chop letters with lower pixels
I have the following Python code: I create a new blank image, with the size returned by getTextSize, and then, I add the text at the bottom-left point, according to the docs, which is x = 0, y = (height – 1) and with the same font, scale and thickness parameters used for getTextSize But when I use imsho…