I want to integrate my jupyter notebook with my website, where I have written the code to fetch real-time data from MySQL server and do real-time visualisation using plotly. But every time I’m having to run all the cells of my Kernel. Is there a way I can automate the running of the Jupyter notebook cel…
Post request by QWebEngineHttpRequest (PyQt5)
I have a question about making POST request in PyQt5. Unfortunately official documentation for this framework for Python doesen’t exist. I have to translate docs from C++ to Python. I have a problem with handle it. To make POST request I have to create instance of class QWebEngineHttpRequest (docs), and…
Data Augmentation in PyTorch
I am a little bit confused about the data augmentation performed in PyTorch. Now, as far as I know, when we are performing data augmentation, we are KEEPING our original dataset, and then adding other versions of it (Flipping, Cropping…etc). But that doesn’t seem like happening in PyTorch. As far …
Data Classes vs typing.NamedTuple primary use cases
Long story short PEP-557 introduced data classes into Python standard library, that basically can fill the same role as collections.namedtuple and typing.NamedTuple. And now I’m wondering how to separate the use cases in which namedtuple is still a better solution. Data classes advantages over NamedTupl…
Chained Selects in Django [Module: django-smart-selects]
I’m trying to use the django-smart-selects Module in order to create dependent dropdown lists. I’ve followed the documentation and defined models in which I used the ‘ChainedForeignKey’ in order to define a link between my companies and my products. models.py Then I have defined a form…
Plotly colorscale reverse direction
How can I reverse the direction of a colorscale in plotly? I am trying to use the color scale Viridis for a marker plot but I want it to be darker for higher values and lighter for lower values. Is there any way to do this without defining my own custom colorscale or changing my color parameter array? Answer …
How to calculate nucleus amount of cell?
I am using Python 3.5 and OpenCV 3 to analyze pictures of cells in biology. My pictures look like this: I want to be able to calculate a ratio of the area of the cell’s nucleus to the area of the cell as a whole. In my slides, the nucleus is dark purple and other regions of the cell are
Remove a Polygon from a MultiPolygon with shapely in Python
I am working with spatial objects in Python using the shapely library. Given a MultiPolygon, I want to remove from it the Polygons which don’t contain an obstacle. However, I haven’t found a way to do this, even though I can get the coordinates from the MultiPolygon just by using the mapping funct…
return last date and value each month in pandas
I have a df in pandas with daily data. I would like to return the last value of each month. I thought the simple solution would be to .resample(“M”).apply(lambda ser: ser.iloc[-1,]) however, it seems as if resample actually computes the month end date rather than return the actual date that appear…
Loading Matlab files into Python
I am attempting to understand the difference between loading a data file into Python and into Matlab in order to translate some code. I have a line of code that goes: When I run the code in Matlab I know that the data is in workspace. There is a 224×501 double called datalib and a 501×29 double call…