Get the elents whose summ are close to a given number and the number of sum does not exceed the given maximum value

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• Ansible task template with output_encoding: base64 throws unknown encoding

  Following is the ansible task

  - name: copy file
    template:
      src: app.properties.j2
      dest: "{{ installDir }}/app.properties"
      output_encoding: base64
  

  While executing the above task, ansible throws the following error An exception occurred during task execution. To see the full traceback, use -vvv. The error was: LookupError: unknown encoding: base64 and the detailed stacktrace is

  
  The full traceback is:
  Traceback (most recent call last):
    File "/usr/lib/python3/dist-packages/ansible/executor/task_executor.py", line 140, in run
      res = self._execute()
    File "/usr/lib/python3/dist-packages/ansible/executor/task_executor.py", line 612, in _execute
      result = self._handler.run(task_vars=variables)
    File "/usr/lib/python3/dist-packages/ansible/plugins/action/template.py", line 187, in run
      f.write(to_bytes(resultant, encoding=output_encoding, errors='surrogate_or_strict'))
    File "/usr/lib/python3/dist-packages/ansible/module_utils/_text.py", line 133, in to_bytes
      return obj.encode(encoding, errors)
  LookupError: unknown encoding: base64
  

  This is the output of ansible version command

  ansible 2.7.7
    config file = /etc/ansible/ansible.cfg
    configured module search path = ['/root/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
    ansible python module location = /usr/lib/python3/dist-packages/ansible
    executable location = /usr/bin/ansible
    python version = 3.7.3 (default, Jul 25 2020, 13:03:44) [GCC 8.3.0]
  

  All these libraries are packaged in dockerfile. Please help / advice.
• Encode variable amount of features in sklearn

  I'm trying to encode vectors using diffrent encoding methods. I already solved OneHotEncoding for varying amounts of features by turning it into a CountVectorizer problem (see here). However I am stuggling to come up with a solution for other encoding methods such as ordinal encoding, as the sklearn implementations don't support varying feature lengths.

  Here is a visualisation of my problem:

  [ ... , [a, b, c, d, e] , ... ]
  [ ... , [c, a, g] , ... ]
  

  In my setup I am using a column transformer to apply diffrent types of encoding for each column of my untransformed feature representation.
• Using Classes for Discord Bots

  I wanted to make a Poker Bot with python for discord so that I can play with my friends. I've never made a discord bot yet and I started to look around for some tutorials. What I found is that most of the people are not using classes for their bots. Are there any reasons for not using a class? My suggestion was to use for example a class for the player and a class for the game manager. Does anyone have a better idea how to implement a Poker Bot or can anyone tell me how to properly use classes to create a discord bot? Or is it maybe better to use another language for this project?

  Thanks for your time
• Is there a way to ignore part of __init__() method while super() in Python3?

  I'm considering if there is a way to use inherit with super() in Python3 but ignore part of the method? I can show you an example below.

  Let's say I have class that initialize some RPi GPIOs

  class Encoder(object):
      def __init__(self, A, B):
          GPIO.setmode(GPIO.BCM)
          GPIO.setup(A, GPIO.IN)
          GPIO.setup(B, GPIO.IN)
          self.A = A
          self.B = B
  

  I would like to inherit this class and its init() method, but I would like to change GPIO.setmode(GPIO.BCM) to GPIO.setmode(GPIO.BOARD). Is there a way to do it without copy whole __init__ into my child class?

  It is not a big deal to just copy it with change in this one line, but I'm curious if it is possible to avoid copy-pasting ;)
• Returning the Indexes of an element that appears in a list of lists

  list = [['2', '6', '1'], ['2', '6', '4', '3', '1', '5']]

  indexes of where "2" appears should return [0,0],[1,0]

  using [[i, bins.index('2')] for i, bins in enumerate(list) if '2' in bins] i only get back [0,0]

  not sure what I'm doing wrong here.
• Read and writing FWF files with condition in python

  i am trying to write a python code to strip the FWF based on conditions.

  My file has different set of fixed width based on the column 1 the length will differ

  what i want is if the column 1 is 42 then check for * in column 2 , if * is there then i need to mark following rows which has 6 as Y in a new column.

  1  080000 ANTI-INFECTIVE AGENTS                                                 
  2  080800 ANTHELMINTICS                                                         
  41 080800                   MEBENDAZOLE                                         
  42 080800                   *100MG TABLET                                        
  6  080800                   00556734    VERMOX                    JAN 0071600 F 
  41 080800                   PRAZIQUANTEL                                        
  42 080800                   600MG TABLET                                        
  6  080800                   02230897    BILTRICIDE                BAY 0062900 F 
  
• How would I create a class that manages/alters an "inventory" of other classes?

  I am working on an EquipmentManager class that needs to be able to view all ShortTrailers, LongTrailers and Tractors, add a new tractor/trailer based on a unique ID, and remove a tractor/trailer based on its ID.

  I'm not really sure where to begin. My current dilemma is trying to make a list for just Trailer in an EquipmentManager class that can combine both classes of ShortTrailer and LongTrailer.

  EquipmentManager class:

  using System.Collections.Generic;
  
  namespace BusinessLayer
  {
      public class EquipmentManager
      {
          private List<Tractor> Tractors {get; set;}
          private List<ShortTrailer, LongTrailer> Trailers {get; set;}
          //          Incorrect but the idea^
          public EquipmentManager() //constructor
          {
              Trailers = new List<Trailer>();
              Tractors = new List<Tractor>();
          }
  
          public object GetTractorCount()
          {
              int TractorCount = 0;
  
              return TractorCount;
          }
  
          public object GetTrailerCount()
          {
              int TrailerCount = 0;
  
              return TrailerCount
          }
  
          public string ViewTractors(Tractors)
          {
              new List<Tractors> = " ";
  
              return Tractors;
          }
  
          public string ViewTrailers()
          {
              new string List<Trailers>;
              
              return Tractors;
          }
  
          public bool AddTractor()
          {
  
          }
  
          public bool RemoveTractor()
          {
  
          }
  
          public bool AddTrailer()
          {
  
          }
  
          public bool RemoveTrailer()
          {
              
          }
          
      }
  }
  

  Classes for Tractor, ShortTrailer, and LongTrailer in their own .cs files, respectively:

  namespace BusinessLayer
  {
      public class Tractor
      {
          string ID;
          int[] Terminal = {01, 02, 03}; 
          string[] Status = {"Arrived", "Fueled", "Serviced", "Ready"};
      }
  
  public class ShortTrailer
      {
          string ID;
          int[] Terminal = {01, 02, 03, 04, 05, 06, 07, 08, 09, 10};
          string[] Status = {"Arrived", "Fueled", "Serviced", "Ready"};
          int Length;
          int Width;
          int Height;
      }
  
  public class LongTrailer
      {
          string ID;
          int[] Terminal = {01, 02, 03, 04, 05, 06, 07, 08, 09, 10};
          string[] Status = {"Arrived", "Fueled", "Serviced", "Ready"};
          int Length;
          int Width;
          int Height;
      }
  }
  
• Flatten LINQ results

  Hello I need to flatten a linq result but I don't know how, I tried different ways with no success, this is an example:

  (I'm using NET 5 records for simplicity is the same as using classes)

  using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Text.Json;
  namespace dicttest
  {
      public class Program
      {
          public record inventory(int inventoryID, string name, string description);
          public record aditionals(int inventoryID, string name, string value);
          public static List<inventory> inventoryList = new();
          public static List<aditionals> inventoryAditionalList = new();
  
          public static void Main()
          {
              // populate
              inventoryList.Add(new inventory(1, "Inventory 1", "Inventory 1 cool description"));
              inventoryList.Add(new inventory(2, "Inventory 2", "Inventory 2 cool description"));
              inventoryList.Add(new inventory(3, "Inventory 3", "Inventory 3 cool description"));
  
              inventoryAditionalList.Add(new aditionals(1, "legs", "4"));
              inventoryAditionalList.Add(new aditionals(1, "screws", "20"));
              inventoryAditionalList.Add(new aditionals(2, "legs", "3"));
              inventoryAditionalList.Add(new aditionals(3, "screws", "50"));
  
              // join
              var result = inventoryList.Select(c => new
              {
                  c.inventoryID,
                  c.name,
                  c.description,
                  aditionals = inventoryAditionalList.Where(s => s.inventoryID == c.inventoryID).Select(d => new { d.name, d.value })
              });
  
              // show
              var json3 = JsonSerializer.Serialize(result, new JsonSerializerOptions { WriteIndented = true });
              Console.WriteLine(json3);
          }
      }
  }
  

  This is the result of that code:

  [
    {
      "inventoryID": 1,
      "name": "Inventory 1",
      "description": "Inventory 1 cool description",
      "aditionals": [
        {
          "name": "legs",
          "value": "4"
        },
        {
          "name": "screws",
          "value": "20"
        }
      ]
    },
    {
      "inventoryID": 2,
      "name": "Inventory 2",
      "description": "Inventory 2 cool description",
      "aditionals": [
        {
          "name": "legs",
          "value": "3"
        }
      ]
    },
    {
      "inventoryID": 2,
      "name": "Inventory 3",
      "description": "Inventory 3 cool description",
      "aditionals": [
        {
          "name": "screws",
          "value": "50"
        }
      ]
    }
  ]
  

  But this is what I want to obtain:

  [
    {
      "inventoryID": 1,
      "name": "Inventory 1",
      "description": "Inventory 1 cool description",
      "legs": "4",
      "screws": "20"
    },
    {
      "inventoryID": 2,
      "name": "Inventory 2",
      "description": "Inventory 2 cool description",
      "legs": "3"
    },
    {
      "inventoryID": 3,
      "name": "Inventory 3",
      "description": "Inventory 3 cool description",
      "screws": "50"
    }
  ]
  

  Any Idea? Thank you!
• Using the following code, why can't I use Google trends-api PyTrends with 5 concatenated words element in a list?

  For reference, I am using this tutorial: https://towardsdatascience.com/a-very-precise-fast-way-to-pull-google-trends-data-automatically-4c3c431960aa

  import pandas as pd
  import pytrends
  from pytrends.request import TrendReq
  pytrend = TrendReq()
  
  KEYWORDS=['Nike','Adidas','Under Armour','Zara','H&M','Louis Vuitton'] 
  KEYWORDS_CODES=[pytrend.suggestions(keyword=i)[0] for i in KEYWORDS] 
  df_CODES= pd.DataFrame(KEYWORDS_CODES)
  df_CODES
  
  EXACT_KEYWORDS=df_CODES['mid'].to_list()
  DATE_INTERVAL='2020-01-01 2020-05-01'
  COUNTRY=["US","GB","DE"] #Use this link for iso country code
  CATEGORY=0 # Use this link to select categories
  SEARCH_TYPE='' #default is 'web searches',others include 'images','news','youtube','froogle' (google shopping)
  
  Individual_EXACT_KEYWORD = list(zip(*[iter(EXACT_KEYWORDS)]*1))
  Individual_EXACT_KEYWORD = [list(x) for x in Individual_EXACT_KEYWORD]
  dicti = {}
  i = 1
  for Country in COUNTRY:
      for keyword in Individual_EXACT_KEYWORD:
          pytrend.build_payload(kw_list=keyword, 
                                timeframe = DATE_INTERVAL, 
                                geo = Country, 
                                cat=CATEGORY,
                                gprop=SEARCH_TYPE) 
          dicti[i] = pytrend.interest_over_time()
          i+=1
  df_trends = pd.concat(dicti, axis=1)
  
  df_trends.columns = df_trends.columns.droplevel(0) #drop outside header
  df_trends = df_trends.drop('isPartial', axis = 1) #drop "isPartial"
  df_trends.reset_index(level=0,inplace=True) #reset_index
  df_trends.columns=['date','Nike-US','Adidas-US','Under Armour-US','Zara-US','H&M-US','Louis Vuitton-US','Nike-UK','Adidas-UK','Under Armour-UK','Zara-UK','H&M-UK','Louis Vuitton-UK',
  'Nike-Germany','Adidas-Germany','Under Armour-Germany','Zara-Germany','H&M-Germany','Louis Vuitton-Germany'] #change column names
  

  Why does it give me a list index out of range error when I use multiple words together like this:

  KEYWORDS=['Nike + Adidas + Puma','Adidas','Under Armour','Zara','H&M','Louis Vuitton'] 
  

  When I concat on the Google Trends website and use: 'Nike + Adidas + Puma' it still gives me a map and a historical frequency of that concatenated string. But why does it give a list out of range error when doing it in the KEYWORDS variable?

  Thank you
• Converting Python recursive code into VB.NET

  I wish to "translate" the following recursive Python code into a VB.NET Sudoku solver:

  def solve():
      global grid
      for y in range (9) :
          for x in range (9) :
              if grid[y][x] == 0:
                  for n in range (1,10):
                      if possible (y,x,n):
                          grid[y][x] = n 
                          solve()
                          grid[y][x] = 0
                  return
      print (grid)
  

  Sub possible(y,x,n) checks whether there are clashes with existing cells, and returns true / false.

  I tried the following for Solve() in VB.NET but it doesn't work (returns zeroes in non-fixed cells on the top row only...). Any thoughts?

  Sub Solve()
      For y = 0 To 8 
          For x = 0 To 8 
              If Grid(y, x) = 0 Then
                  For n = 1 To 9 
                      If Possible(y, x, n) Then 
                          Grid(y, x) = n 
                          Solve() 
                          Grid(y, x) = 0
                      End If
                  Next n
                  Return
              End If
          Next x
      Next y
  End Sub
  

  The full background is available here https://www.youtube.com/watch?v=G_UYXzGuqvM
• How to implement recursive method **at** object initialization?

  Say I have the following object:

  const dog = {
    sound: 'woof',
    speak: function() {
      console.log(this.sound)
    }
  }
  

  How could I implement dog.speak recursively within the initial object literal declaration?

  I could accomplish this by defining the dog.speak method outside of the initial object literal. E.g.:

  const dog = {
    sound: 'woof'
  }
  
  const dog.speak = () => {
    console.log(dog.sound)
    window.setTimeout(dog.speak, 1000)
  }
  

  This works because there is no this concept here - the sound property explicitly belongs to dog. But I would prefer to define this all within the initial object literal.

  To do so, I would need to preserve the this context via .bind(). But I'm struggling to identify where I would .bind() dog as this before making the recursive function call.
• All combination for a natural number using recursive methot C#

  I have this code:

  private static IEnumerable<(string formula, int sum)> GenerateRecursive(int number)
  {
      if (number == 1)
          yield return ("1", 1);
      else
          foreach (var pair in GenerateRecursive(number - 1))
          {
              yield return ($"{pair.formula} - {number}", pair.sum - number);
              yield return ($"{pair.formula} + {number}", pair.sum + number);
          }
  }
  
  private static IEnumerable<string> SolveFor(int target, int count)
  {
      return GenerateRecursive(count)
        .Where(item => item.sum == target)
        .Select(item => $"{item.formula} = {item.sum}");
  }
  

  which gives you all the combination for a natural number from(1, 2 ,3..... , n) using addition and subtraction.

  For input is the number and the length for example:

  • length : 6
  • Number : 3

  And for the output:

  • 1 + 2 + 3 - 4 - 5 + 6 = 3
  • 1 + 2 - 3 + 4 + 5 - 6 = 3
  • 1 - 2 - 3 - 4 + 5 + 6 = 3

  I am wondering how can I do this without LINQ and Collections Generic and using just recursive method. Thank You.