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Tag: python

Python rows and columns arrangment

I have this below data file and I want three columns with heading “TIMESTEP”, “id” and “mass”. Its corresponding values are just immediately below itenter image description here. How to do it. Please help Below link 1 is my snapshot of data file and 2 is my desired arrangem…

function object has no attribute ‘connect’

Seems there’s a problem with my sql alchemy connection, don’t get why? it works sometimes and then doesn’t the next. Also vs code isn’t auto recommending sql alchemy methods, maybe I’ve set it up wrong? –database.py file main file ERROR I GET: It seems to me that the query …

Permutation without repetition, efficient way

As “combinations with replacement” does, this function only produces the combination. I want permutation of each combination without repetition. For example When I tried to do this by Time complexity was exponential, and made repititions When I tested with one list sum_n_combs[0], which is [0, 0, …

Short way to get all field names of a pydantic class

Minimal example of the class: The way it works: Is there a way to make it work without giving the class again? Desired way to get all field names: It would also work if the field names are assigned to an attribute. Just any way to make it make it more readable Answer What about just using __fields__: Output: …

Python – Write a row into an array into a text file

I have to work on a flat file (size > 500 Mo) and I need to create to split file on one criterion. My original file as this structure (simplified): JournalCode|JournalLib|EcritureNum|EcritureDate|CompteNum| I need to create to file depending on the first digit from ‘CompteNum’. I have started m…