I want to do the following, but obviously I realise that this kind of iterative method is very slow with large DataFrames, what other solutions are there to this problem?: What I would expect the code above to do is: Sub in n from 0 to 1,000 into line 3, with an i of 0, and then if the condition
Tag: iteration
Reading next line of big text file
I’m new to python. I have a huge text file (about 15gb), so it is not possible to read in all the lines, I have read here how to fix that problem. Now about my problem. Is it possible to read the next line within a for loop without jumping to the beginning of the loop. This is what I
How to use while loop to check difference between calculation output , convergence calculation
I am writing a code that carry outs the calculation: I want to pass incremental n_value value starting from 2 then +0.10 each time it iterates. For the iteration I am writing while loop counter however, codes does not work. However the code does not iterate and I am kind of struggling how to create the iterat…
How to look for specific values in a dictionary and return them properly
So I have a list dictionary of dictionaries (lst) that I’m trying to iterate through, compare values, and return the appropriate values. I have the following code to retrieve 2 arguments given from the command line, compare them through the dictionaries entries, and return the appropriate value: get_att…
Python Regex DataFrame match
I have a DataFrame and I would like to perform a sorting if the match between my regex and the name of one of the lines of this DataFrame matches. Is there an option in the “re” library to help me? I try with this piece of code but without success Thank you in advance for your answers Answer I
Iterative summation
I’m trying to write a python code that allows me to iteratively sum up the average values of three elements of a list, starting with the third element and its two predecessors. Let me give you an example: I want to calculate the following: Since I’m quite new to programming I couldn’t find a…
Why is my attempt to iterate through a list of lists and update dictionary values resulting in unchanged dictionary?
I want to iterate through a list of lists and if an instance in the list matches a key in a dictionary, add 1 to that dictionary key value. However, when I execute my code it returns the dictionary with no changes to the values. Thank you for your time & help. I searched for a similar question but did
When creating a function with summation in it, how do you add terms to the summation? (Python)
I need to find a way to add new terms to the function: f(x) = 4sin(x)/pi such that the new function looks like this: f(x) = 4sin(x)/pi + 4sin(3x)/3pi + 4sin(5x)/5pi + 4sin(7x)/7pi … up to 201. I was thinking I could create the function with a for loop inside that would iterate using a list n but there m…
The iteration loop is not working properly for API
There is an API that only produces one hundred results per page. I am trying to make a while loop so that it goes through all pages and takes results from all pages, but it does not work properly. This script goes through the pages: At startup: He sees five pages. When I look at the variable after execution: …
Error re.findall() when used in a iteration over a list from pandas dataframe
I converted a column to list from a pandas df: I wanted to separate this kind of strings: ‘BuyMeADrink’ into ‘Buy Me A Drink’ So I used one of the following: or or All of the above returned this: TypeError: expected string or bytes-like object I understand that findall() needs strings …