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 scores per different regularization parameter C.
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 simplify solution by reshape for DataFrame by DataFrame.stack with
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 finished with exit
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 cases on the backend. Using these two layers of fixtures, I’d like to
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, Strength:5 etc) and the work at the buildings are performed better when
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 Output should be:
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. That is why it is not executing the full command. Any idea how
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 test
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