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Questions tagged [pandas]

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Pandas is a Python data analysis library.

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4votes
3answers
84views

I have a custom object which stores dataframes in memory given a certain hierarchy, and I want to store this data in a file while maintaining the hierarchy. This hierarchy involved parents, children, ...
8votes
3answers
491views

I have a comma-separated value (CSV) file as input, and I am supposed to interpolate all missing (nan) values based on neighboring non-diagonal values.The CSV ...
con's user avatar
  • 361
4votes
2answers
353views

I want to calculate the quarterly average of a time-indexed dataframe column in a rolling fashion. The mean at any timestamp should not contain information about future timestamps.This is a code to ...
shamalaia's user avatar
3votes
3answers
140views

I have the following code to amend two rows of "test_base.csv" with the entries of the arrays "a_temp" and "b_temp," saving the result into "result.csv." .csv ...
Zachary's user avatar
4votes
1answer
214views

I'm trying to build a function that identifies those who are promoted into a list of jobcodes, or are promoted within that list of jobcodes.Initially I was using ...
0votes
1answer
123views

I have a dataset that contains 750,000 rows. I want to query each row and get the postcodes using the latitudes and longitudes.Problem:The code is executing very fast when I query like 100 rows, and ...
Buchi's user avatar
1vote
1answer
105views

This post is modified from this one: https://codereview.stackexchange.com/posts/292885/edit (Alternatives to iterrow loops in python pandas dataframes).I have a piece of code to calculate price ...
Laura's user avatar
6votes
2answers
748views

I have a piece of code to calculate price sensitivity based on the product and its rating.Below is the original data set with product type, reported year, customer’s rating, price per unit, and ...
Laura's user avatar
2votes
1answer
58views

I'm trying to capture profits and set a stop loss in my trading strategy. I want the stop loss to be set daily based on the past data and if the current price, i.e., price for the date falls below the ...
driver's user avatar
2votes
1answer
253views

I'm looking to understand if my code has an obvious blockage or performance pain point that will cause it to operate slower or use more memory than it should.The current Excelfile i am processing ...
sayth's user avatar
3votes
1answer
296views

I have the following data:...
mahmoud988's user avatar
1vote
1answer
149views

I am performing a sports prediction multi-class classification problem, and wanted to compare the differences in model performance between normalised and non-normalised data. You can see the 2 ...
3votes
1answer
245views

I am trying to solve a multi-class classification involving prediction the outcome of a football match (target variable = Win, Lose or Draw). With a dataset of 2280 rows, which is 6 seasons of ...
3votes
1answer
89views

Looking for a better approach to write below transformation using Python. Is it possible to avoid loop and still achieve the desired output?It is too slow for 10 million rows....

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