I have this data and try to solve the following question. DataFrame_from_Scratch = spark.createDataFrame(values, columns) DataFrame_from_Scratch.show() groupby id and count unique grade what is the maximum groupby id and date and how many unique date is there Answer Your implementation for the 1st question is…
Tag: python
Why is mechanize not installing properly via pip on RPi? (python 3.9)
I can’t get to successfully install the package ‘mechanize’ on a Raspberry Pi (so, ARM chip) with Debian Bullseye, python 3.9 in a virtualenv. When I look in the virtualenv’s sitepackages folder, indeed the mechanize package only has .dist-info file, but not a mechanize.py file or mech…
How to scrape multiple pages in HTML table with same URL with Python?
I’m trying to scrape the job postings from the following public website: https://newbraunfels.tedk12.com/hire/Index.aspx I know there are a few similar questions on here, but I’ve followed all of them and can’t seem to figure it out as my javascript/html skills are limited. I can get the fir…
remove background of RGB image (3D array) based on another array (boolean mask)
I’m stuck on what should be fairly straight forward, but other opened questions don’t see to address exactly the same issue i’m having. I’m trying to crop an image based on boolean mask. I can do this with: (This function inputs RGB image (w, h, c) and True/False mask of shape (w, h, n…
SQLAlchemy alternative names for table columns
I know my question must be very simple but I couldn’t find any straight answer to it. I am mapping a table with SQlAlchemy : How to I set up an label for the existing columns above to avoid they current name with spaces? Bonus question : What is the advantage of mapping as as class instead of mapping as
Python Regex groups causing index errors
So, my interpereter is complaining about IndexError: Replacement index 1 out of range for positional args tuple when calling re.group(#) or re.groups() under specific circumstances. It is meant to return a phone number, such as +1 (555) 555-5555 Here is the regex used, as it is declared elsewhere: Here is the…
How to display multiple django database models in a flex box row?
So just to give some information, I know how flexbox works and sorta know how django works and have displayed django database models on a page before already, using a loop. The issue I’ve encountered is I want to have multiple (three) of these models on a row kinda like if I used a flex box with three d…
is there a way to delete or replace any row on my data that it’s type is ‘datetime.datetime’
I have 1200000 rows x 96 columns dataframe, they are numbers, except for a few of them whose types are date and time. The Question is: I’d like to remove any row whose type is datetime.datetime and convert the rest to float if they are number but their type is string Answer This should get you the resul…
When using python script to run scrapy crawler, data is scraped successfully but the output file shows no data in it and is of 0 kb
#Scrapy News Crawler #defining function to set headers and setting Link from where to start scraping #Iterating headline links and getting healine details and date/time #Python script (Separate FIle ) Answer Instead of running you spider with cmdline.execute you can run it with CrawlerProcess, read about comm…
How to print the three rows with the highest values in a single column in a pandas dataframe
I have a pd.dataframe that look like this: How can I ask python to print out something like this: “Highest accuracy was 0.9833333333333332 using 24 features, second highest accuracy was 0.9692307692307693 with 38 features, third highest accuracy was at 0.9679487179487178 with 10 features” Answer I…