How to merge every three (or more) elements of list in one in python? Question: list = [1, ‘one’, ‘first’, 2, ‘two’, ‘second’, 3, ‘three’, ‘third’, 4, ‘four’, ‘fourth’, 5, ‘five’, ‘fifth’, 6, ‘six’, ‘sixth’] is it compact way to make new list like this? (merging 3 elements, then another 3…): [‘1onefirst’, ‘2twosecond’, ‘3threethird’, ‘4fourfourth’, …
Is it possible to use .join() to concatenate a list of strings in a nested list in Python? Question: I’m trying to use join() in a nested list with an if statement. If the condition is met, I want to combine all indices from [1:-3]. Every time the join() function doesn’t join the index. Input …
Remove specific character from array and create multiple ones from initial array Question: I have an input as: [a, b, c, *] If my input has * then I need to create 29 different versions (29 letters in Turkish alphabet) of the input list like below. I also need to remove * from new arrays: …
Pyarrow Join (int8 and int16) Question: I have two Pyarrow Tables and want to join both. A.join( right_table=B, keys="A_id", right_keys="B_id" ) Now I got the following error: {ArrowInvalid} Incompatible data types for corresponding join field keys: FieldRef.Name(A_id) of type int8 and FieldRef.Name(B_id) of type int16 What is the preferred way to solve this issue? I …
How to join dataframe on itself creating all combinations inside groups Question: Some mock data: pd.DataFrame({‘date’: {0: Timestamp(‘2021-08-01 ‘), 1: Timestamp(‘2022-08-01 ‘), 2: Timestamp(‘2021-08-02 ‘), 3: Timestamp(‘2021-08-01 ‘), 4: Timestamp(‘2022-08-01 ‘), 5: Timestamp(‘2022-08-01 ‘), 6: Timestamp(‘2022-08-01 ‘) }, ‘product_nr’: {0: 1, 1: 2, 2: 3, 3: 4, 4: 5, 5: 6, 6: 7}, ‘Category’: {0: …
How to map/join some index column of a multiindex pandas DataFrame? Question: Lets say I have a DataFrame df with a multi index [‘siec’, ‘geo’] (shown in italic): siec geo value a DE 1 a FR 2 and a mapping DataFrame mapping_df from geo to id_region with a single index [‘geo’]: geo id_region DE 10 …
how can i do to export layers from Esri with python Question: i try to join a text (an adress) with a list to have at final my list with the adress in fisrt like: paris street 1 paris street 2 etc so i try to do that with this script, but it’ dont work …
what does exactly the join() method do in python multithreading Question: I’m still learning how to use multithreading, and I’m confused about how the join() method works. based on what I read, the join() method stops everything until the thread terminates. but take a look at this code: from threading import Thread def do_something(i): print("Sleeping…") …
find missing datas between two tables with similar columns python Question: I have two dataframes with 2 similar columns "date" and "id_number" and I want to find all the id_number missing from the second table to compare. Here’s my code: import pandas as pd data1 = {‘date’: [‘7/09/22’, ‘7/09/22’, ‘7/09/22’], ‘second_column’: [‘first_value’, ‘second_value’, ‘third_value’], ‘id_number’:[‘AA576bdk89’, …
Join two dataframes on multiple conditions in python Question: I have the following problem: i am trying to join df1 = [‘ID, ‘Earnings’, ‘WC, ‘Year’] and df2 = [‘ID’, ‘F1_Earnings’, ‘df2_year’]. So for example: the ‘F1_Earnings’ of a particular company, e.g. with ID = 1 and year = 1996, in df2 (aka. the Forward Earnings) …
