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How can you store values in a new matrix without indexing it?

New to python and also using stack overflow so please bear with me, I’m just trying to get used to it. Right, so I have 5 image frames. I wish to extract the pixel values from these frames in the time domain. Therefore I need to store the values in a new matrix with no_of_frames as my rows (time domain

How to list the name of all Poetry extras?

I’m working on a project where I need to install all of the Poetry extras to run an automated build. What is the easiest way to get that list as a space-separated list, for use in poetry install –extras=”$extras”? Some possibilities: I could use the Python toml package, but that would …

Extracting human names from text data using python stanza

I have a dataset containing the string value of book title pages (e.g. all words on the title page, each line of my txt file is a different book). From this I am trying to retrieve the author’s name as the human name which appears on the title page, and store each name on a separate line in a csv

Provide a file path or directory that contains files

I want to iterate through directories to find PDF files but I also want to be able to profile the file path without iterating through directories. So this is what I wrote: Answer Use os.path.isdir/os.path.isfile to check if the path is a valid directory/file. If it’s a directory – walk it with a f…

Python lxml find text efficiently

Using python lxml I want to test if a XML document contains EXPERIMENT_TYPE, and if it exists, extract the <VALUE>. Example: Is there a faster way than iterating through all elements? That attempt is also getting messy when I want to extract the <VALUE>. Answer Preferably you do this with XPath wh…

Unknown image file format. One of JPEG, PNG, GIF, BMP required

I built a simple CNN model and it raised below errors: The code I wrote is quite simple and standard. Most of them are just directly copied from the official website. It raised this error before the first epoch finish. I am pretty sure that the images are all png files. The train folder does not contain anyth…

Python object array of empty arrays

I am attempting to create a numpy array of empty arrays without using loops. Using loops, I can use a simplified operation like Or a marginally more sophisticated approach based on np.nditer: I can’t seem to find an indexing expression that will allow me to make this assignment in a vectorized manner. I…

How do I load a dataframe in Python sklearn?

I did some computations in an IPython Notebook and ended up with a dataframe df which isn’t saved anywhere yet. In the same IPython Notebook, I want to work with this dataframe using sklearn. df is a dataframe with 4 columns: id (string), value(int), rated(bool), score(float). I am trying to determine w…