CPython 3.8 Seems like it’s an interpreter magic that definitely has something to do with garbage collection. Is it CPython specific, not guaranteed by any standard behavior? Answer Given two distinct objects x and y (i.e., x is y is false), id(x) != id(y) is only guaranteed if the life times of x and y…
When the viewport isolates a object, ogsRender() still renders all objects
the viewport like this: 3 objects, 1 selected(the green one). my code: When I execute them one by one, the result is as expected. only the “green one” is in the screenshot. When I execute them together, isolate becomes invalid. all 3 objects are in the screenshot. Why?? Answer This is because the …
Easiest way to split JSON file using Python
I am working on an interactive visualization of the world happiness report from the years 2015 up to 2020. The data was split into 6 csv files. Using pandas, I have succesfully cleaned the data and concatenated them into one big JSON file with the following format: Now, I would like to programmatically format…
Is there any possibility to create a new column based on the keywords list
Is there any possibility to create a new column based on the keywords list? I have data like this: I would like to create a new column if the keyword exists in the Type column and if 2 keywords exist then the value should both keyword with a comma. I am having a problem because I have to check also
Networkx: Update single attribute of all nodes within a graph without for loop
I have some code that can update a graph’s attribute: This doesn’t update the node attribute, and instead applies the update to the graph as a separate entity. Is there any way to mass-update a single attribute of an entire set of nodes without sticking in for node in (range(0, len(graph.nodes)): …
Adaptive Threshold error: (-215:Assertion failed) src.type() == CV_8UC1 in function ‘adaptiveThreshold’
I am working on pre-trained vgg16 model, for that I need to have input size of image file to be (224,224,3). The code I am working on is: Help me in resolving the issue. Answer The error says the solution: src.type() == CV_8UC1 meaning you need to set your image type to the uint8 source So if you redefine you…
how to convert lists of lists into array in python?
I am calculating the similarity scores for a pair of nodes in a graph, the result is a lists of lists as detailed below: example output here I have each node pair similarity scores How can i put this in matrix form with each column having nodes and rows bare the similarity score? Any help will be much appreci…
How to remove multiple object from the list at the same time
I am trying to write a code such that it removes adjacent (+n, -n) pairs such as (3,-3) (4,-4) etc. However I cannot use del[i] since when I remove an element the xarray also changes. I tried to use deepcopy to copy the x array but I couldnt manage to run the code. Answer You can sort the list of
Tensorflow dataset from numpy array
I have two numpy Arrays (X, Y) which I want to convert to a tensorflow dataset. According to the documentation it should be possible to run When doing this however I get the error: ValueError: Shapes (15, 1) and (768, 15) are incompatible This would make sense if the shapes of the numpy Arrays would be incomp…
python size of byte string in bytes
I’m confused as to why: What exactly is b’123′? Answer As @jonrsharpe has stated, b’123′ is an immutable sequence of bytes, in this case of 3 bytes. Your confusion appears to be because len() and sys.getsizeof(b’123′) are not the same thing. len() queries for the numb…