Skip to main content

Filter pandas dataframe by multiple columns, using tuple from list of tuples

So I have been referencing this previous question posted here Filter pandas dataframe from tuples.

But the problem I am trying to solve is slightly different.

I have a list of tuples. Each tuple represents a different set of filters I would like to apply to a dataframe accross multiple columns, so I can isolate the records to perform additional tasks.

Whenever I try and filter by a single tuple within the list of tuples, the dataframe I get back has no records.. If I break the tuple values out in a very long form way it works fine. Not sure what I am missing or not thinking about here..

Using the same example from the post I have been referencing....

AB_col = [(0,230), (10,215), (15, 200), (20, 185), (40, 177), 
                (0,237), (10,222), (15, 207), (20, 192), (40, 184)]

sales = [{'account': 'Jones LLC', 'A': 0, 'B': 230, 'C': 140},
         {'account': 'Alpha Co',  'A': 20, 'B': 192, 'C': 215},
         {'account': 'Blue Inc',  'A': 50,  'B': 90,  'C': 95 }]
df = pd.DataFrame(sales)

example dataframe

The answer from the other question

df = df[df[["A","B"]].apply(tuple, 1).isin(AB_col)]

Which returns

example results

However, I want to only get one record back, that matches the first tuple in the list of tuples. So I tried this

df[df[["A"]].apply(tuple,1).isin(AB_col[0])]

But get no records returned

my modification results

However, I can do this which gets me the results I want, but when I have essentially a list of tuples that is every combination of column values to use a filters for different levels of calculations, this seems like way too much code to have to use to product the desired results

df[(df['A']==AB_col[0][0]) & (df['B']==AB_col[0][1])]

Which gets me results I want

long form results but what i need

Is there a way to get to this same result more efficiently?

Thanks!



source https://stackoverflow.com/questions/73129334/filter-pandas-dataframe-by-multiple-columns-using-tuple-from-list-of-tuples

Comments

Popular posts from this blog

How to show number of registered users in Laravel based on usertype?

i'm trying to display data from the database in the admin dashboard i used this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count(); echo $users; ?> and i have successfully get the correct data from the database but what if i want to display a specific data for example in this user table there is "usertype" that specify if the user is normal user or admin i want to user the same code above but to display a specific usertype i tried this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count()->WHERE usertype =admin; echo $users; ?> but it didn't work, what am i doing wrong? source https://stackoverflow.com/questions/68199726/how-to-show-number-of-registered-users-in-laravel-based-on-usertype

Why is my reports service not connecting?

I am trying to pull some data from a Postgres database using Node.js and node-postures but I can't figure out why my service isn't connecting. my routes/index.js file: const express = require('express'); const router = express.Router(); const ordersCountController = require('../controllers/ordersCountController'); const ordersController = require('../controllers/ordersController'); const weeklyReportsController = require('../controllers/weeklyReportsController'); router.get('/orders_count', ordersCountController); router.get('/orders', ordersController); router.get('/weekly_reports', weeklyReportsController); module.exports = router; My controllers/weeklyReportsController.js file: const weeklyReportsService = require('../services/weeklyReportsService'); const weeklyReportsController = async (req, res) => { try { const data = await weeklyReportsService; res.json({data}) console...

How to split a rinex file if I need 24 hours data

Trying to divide rinex file using the command gfzrnx but getting this error. While doing that getting this error msg 'gfzrnx' is not recognized as an internal or external command Trying to split rinex file using the command gfzrnx. also install'gfzrnx'. my doubt is I need to run this program in 'gfzrnx' or in 'cmdprompt'. I am expecting a rinex file with 24 hrs or 1 day data.I Have 48 hrs data in RINEX format. Please help me to solve this issue. source https://stackoverflow.com/questions/75385367/how-to-split-a-rinex-file-if-i-need-24-hours-data