I scraped some links from a website and I’m using scrapy spider for scraping purpose. But I got none type value. Just I am any number of image link of li. I download via loop. This is my HTML code I just want to get all link inside li like this Answer Try this, to extract the all image use
Variability/randomness of Support Vector Machine model scores in Python’s scikitlearn
I am testing several ML classification models, in this case Support Vector Machines. I have basic knowledge about the SVM algorithm and how it works. I am using the built-in breast cancer dataset from scikit learn. Using the code below: When printing the scores as in: When I run this code, I get certain score…
Filter Pandas MultiIndex over all First Levels Columns
Trying to find a way of efficiently filtering all entries under both top level columns based on a filter defined for only one of the top level columns. Best explained with the example below and desired output. Example DataFrame Create filter for multiindex dataframe Desired output: Answer You can reshape for …
Process finished with exit code -1073740791 (0xC0000409) error not opening a website
I am creating a desktop app using PyQt5 and QtDesginer. I have a login page connected to a database, and the user is asked to enter username and password. In the designer, I created a window that opens a certain link. The following code is running. But when inserting it into the second code it gives Process f…
Pytest: Nested use of request fixture
I’d like to get some help on how to run pytests with multiple layers of parameterized pytest fixtures. I have a global request-based fixture for selecting a base implementation of the system I’d like to test: I’d like to now run some additionally-parametrized tests against different test cas…
Too many combinations
Hi I’m trying to generate all possible combinations of workers to buildings. (let me explain my scenario): I’m playing MineColonies on minecraft. In this mod you have colonists whom can be assigned jobs at buildings. These workers have skills and a score assigned to them. (like Agility: 20, Streng…
How to groupby 2 columns but order descending by count()
i have a dataframe and want to group 2 columns, which is working fine. Now the grouped dataframe is sorted by the CustomerID values. But i want to sort it by the count(). So that i have the Sektor then the CustomerIDs but the CustomerIds that occure the most should be at the top. So descending. Expected Outpu…
ffmpeg command throwing “Invalid duration specification for ss: 00:00:00,000”
ffmpeg -i input.mp4 -ss 00:00:00,000 -to 00:00:03,466 -c:v copy output.mp4 The above is my ffmpeg command which is throwing the error of “Invalid duration specification for ss 00:00:00,000”. I think it is throwing the error because of the timestamp format. It is not taking input of milliseconds. T…
Uncommon rows based on a column in pandas
Suppose I have two dataframes: and I want to use the second df as reference and drop those rows that exist in df2 from df1, so the result would be I tried: but this gives me the following: Answer Use Series.isin with inverted mask by ~ in boolean indexing, working well if need test only one column: If need te…
search by subproces in dir and return non-zero error
i want to make a program to search all my pc and make list of result , so first of all i can not search all partition together and have to use os.chdir(“”) on the other hand when some Suffix dose not exit in it make a error and stop program. My code: And result: What sould i do to