multiple-columns

How do I use numpy arctan2 within polars dataframe? Question: I am trying to use numpy arctan2 in polars dataframe. The code works outside of polars import polars as pl import numpy as np data = pl.from_dict( {‘v’: [-4.293,-2.4659,-1.8378,-0.2821,-4.5649,-3.8128,-7.4274,3.3443,3.8604,-4.2200], ‘u’: [-11.2268,6.3478,7.1681,3.4986,2.7320,-1.0695,-10.1408,11.2327,6.6623,-8.1412]}) this works v = data [‘v’].to_list() u = data [‘u’].to_list() wd = np.round(np.degrees(np.arctan2(v,u).tolist())+180,3) print(wd) …

Create df column based on other columns in df Question: Create len column based on num_type_len by matching with num on two columns. num_type_len Actual_num [8812_CHECKING_90, 7094_SAVINGS_75, 9939_CHECKING_89] 7094 [6846_CHECKING_87, 1906_CHECKING_90] 1906 Expected output:- | Report_length | Actual_num | | ————- | ———- | | 75 | 7094 | | 90 | 1906 | Asked …

Create "Yes" column according to another column value pandas dataframe Question: Imagine I have a dataframe with employee IDs, their Contract Number, and the Company they work for. Each employee can have as many contracts as they want for the same company or even for different companies: ID Contract Number Company 10000 1 Abc 10000 …

How to define a function based on vaues of multiple columns Question: I have a datafile as follows: Activity Hazard Condition consequence welding fire chamber high painting falling none medium I need to create a fifth column based on the values in the activity, hazard, condition, and consequence columns. The conditions are as follows if …

How to get values from a Column in pandas if another column in same dataframe matches a condition? Question: Tax_Amount Rate SGST CGST IGST TDS Tax_Term 0 5697.0 9.0 NaN NaN NaN NaN CGST 1 954.0 9.0 NaN NaN NaN NaN TDS 2 1305.0 9.0 NaN NaN NaN NaN CGST 3 2724.0 9.0 NaN NaN …

How to assign multiple column in one go with dictionary values? Question: I have a pandas dataframe and a function that returns a dictionary. I want to assign the result of the function to multiple columns. But the problem is, the function returns a dictionary that I want to save only the values to columns. …

Convert dataframe to 5*5 grid of choice Question: Following are the standard values for score and grades. Score column contains numbers within specified range. Score Grade1 Grade2 Grade3 Grade4 <260 A1 IA1 D1 ID1 260-275 A2 IA2 D2 ID2 275-280 A3 IA3 D3 ID3 280-285 A4 IA4 D4 ID4 >=285 A5 IA5 D5 ID5 Input …

Check if two columns are having matching values, but values are not in the same index places(Python, Pandas) Question: I have two DataFrames about Super Store Sales: the first is named df_orders the second one is named df_returns In both DataFrames we have a matching column called "Order ID", but df_returns has less rows than …

Substract 2 Columns and show the current Value on a new one Question: I have this DataFrame: Names Account_1 Account_2 ID_Movement Less_1 Less_2 Peter 35 70 Movement_1 0 5 Peter 35 70 Movement_2 6 0 Peter 35 70 Movement_3 1 0 Peter 35 70 Movement_4 0 2 Jhon 55 60 Movement_5 6 0 Jhon 55 …

Python – Grouping by multiple columns (Categorical dtype vs numeric dtype)- why are the results so different? Question: I have a question about grouping pandas DataFrames by multiple columns. I am looking at some data for a TV show and trying to ensure that no season has two contestants with the same name. Series Name …