Summary I would like to parse a string that represents a Python argument list into a form that I can forward to a function call. Detailed version I am building an application in which I would like to be able to parse out argument lists from a text string that would then be converted into the *args,**kwargs pa…
Scipy.signal.spectrogram output lengths
I am trying to analyze the frequencies of a song at certain points of time held inside an array. I am using the scipy.signal.spectrogram function to generate those frequencies. the length of the song is 2:44, or 164 seconds, and the sampling rate of the scipy.wavfile read is 44100. When I use spectrogram: The…
Mask R-CNN for object detection and segmentation [Train for a custom dataset]
I’m doing a research on “Mask R-CNN for Object Detection and Segmentation”. So I have read the original research paper which presents Mask R-CNN for object detection, and also I found few implementations of Mask R-CNN, here and here (by Facebook AI research team called detectron). But they a…
Django 2.0 – Reverse for ‘password_change_done’ not found. ‘password_change_done’ is not a valid view function or pattern name
I’m having this error message after trying to change my app’s password. Do you have any idea of what’s causing this route to fail? Actually, it is changing the password but it isn’t rendering the success template “password_change_done.html”. Thanks! app/urls.py ERROR MESSAG…
Highlight rows from a DataFrame based on values in a column in Python Pandas
I have been trying to highlight some rows in a pandas dataframe based on multiple conditions. I’m expecting that when a string in the target column match the criteria defined in the function, the entire row will be highlighted. I tried different combinations of the .style.apply method, but it kept givin…
What are the valid values for –platform, –abi, and –implementation for pip download?
pip download has several flags that I would like to play with –platform, –abi, and –implementation. Where can I find the complete list of valid values for these flags? Answer I don’t think there is one definitive list. You have to collect it from different sources. Start with PEP 425: …
Nested lambda statements when sorting lists
I wish to sort the below list first by the number, then by the text. Attempt 1 I was not happy with this since it required splitting a string twice, to extract the relevant components. Attempt 2 I came up with the below solution. But I am hoping there is a more succinct solution via Pythonic lambda statements…
pandas DataFrame: normalize one JSON column and merge with other columns
I have a pandas DataFrame containing one column with multiple JSON data items as list of dicts. I want to normalize the JSON column and duplicate the non-JSON columns: I want I can normalize JSON data using: but I don’t know how to join that back to the id column of the original DataFrame. Answer You ca…
How can i display my images and draw rectangles over regions of interests and get the coordinates?
What i want is to read an image and have it fixed on the screen, then manually draw rectangles on the regions of interest and have them outputed as coordinates of the rectangle as have the rectangle stay on the image to know which region of interest i marked. The first step is actually reading the image and f…
email authentification doesn’t work using django-allauth
I installed django-allauth and set it up to use it for the internet registration and authentication backend in order to have an email confirmation at registration and sign up the users using their email instead of their username. What is happening is that the registration works perfectly, the authentication u…