I am following the Runestone Academy Python3 course and tried to implement ‘addition’ feature for fractions using Class but I am getting error. When I am not using GCD implementation, the code is running fine Here is my code: This is the error I am getting: I also tried with this variation but same error: Answer The gcd method should
Tag: python-3.x
Python – meshio: How to define vertex cells for point-only data?
Problem I have a 2D time-series data, and I want to save it as XMDF using meshio. The problem is, my mesh is just an array of points with associated point data, and I don’t have any cell defined. As such, I tried to use the “vertex” cell type, which is a single-point cell, but it doesn’t work. Meshio’s documentation
Calculate z-score for multiple columns of dataset on groupby and transform to original shape in pandas without using loop
I have a data frame Need to calculate Z-score for columns “c1”, “c2”, “c3” using groupby on “id”, and transform it to the original form without using the loop. Expected output: How to do it? Answer Use GroupBy.transform with DataFrame.join:
Copy the last seen non empty value of a column based on a condition in most efficient way in Pandas/Python
I need to copy and paste the previous non-empty value of a column based on a condition. I need to do it in the most efficient way because the number of rows is a couple of millions. Using for loop will be computationally costly. So it will be highly appreciated if somebody can help me in this regard. Based on
beautiful soup find_all() not returning all elements
I am trying to scrape this website using bs4. Using inspect on particular car ad tile, I figured what I need to scrape in order to get the title & the link to the car’s page. I am making use of the find_all() function of the bs4 library but the issue is that it’s not scraping the required info of
Lookup ERROR while trying to log in instagram using Helium/Selenium
so i am trying to log in using the Helium package which uses selenium under the hood, i looked into its documentation, but i get a lookeup Error. can anyone help please :( Here is the github: Helium Cheatsheet Here is my code: ofc the username and password here are fake ones :) Here is the full error, i get
Counts for unique values in pandas
I want to find counts for unique values. Goal is to have df having df.a.value_counts().unique() in one column and in next column their counts. . . . . Goal Answer Apply value_counts once more:
how to compare two columns and get the mean value of the the 3rd column for all matching items in the two in python pandas dataframe?
I have the following table named Rides : start_id end_id eta A B 5 B C 4 A C 6 A B 5 B A 3 C A 3 B C 6 C A 5 A B 8 From the Rides Table , I want to Create a new table which should look like something like below : start_id end_id
Packages that are imported are not recognized during parallel computing?
I’m running the function get_content in parallel setting with multiprocess.Pool. Then it throws out an error NameError: name ‘session’ is not defined. Clearly, I defined it with session = requests.Session() . Could you please elaborate on this issue? Answer First of all, your import statement is incorrect and should be: (You had from multiprocess …, so I am not sure
How to slice/chop a string using multiple indexes in a panda DataFrame
I’m in need of some advice on the following issue: I have a DataFrame that looks like this: And what I need to get is the SEQ that’s separated between the different BEG_GAP and END_GAP. I already have worked it out (thanks to a previous question) for sequences that have only one pair of gaps, but here they have multiple.