Is there any way to change data type of each item of a list in Python?

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• Python File Tagging System does not retrieve nested dictionaries in dictionary

  I am building a file tagging system using Python. The idea is simple. Given a directory of files (and files within subdirectories), I want to filter them out using a filter input and tag those files with a word or a phrase.

  If I got the following contents in my current directory:

  data/
     budget.xls
     world_building_budget.txt
  a.txt
  b.exe
  hello_world.dat
  world_builder.spec
  

  and I execute the following command in the shell:

  py -3 tag_tool.py -filter=world -tag="World-Building Tool"
  

  My output will be:

  These files were tagged with "World-Building Tool":
  data/ world_building_budget.txt
  hello_world.dat
  world_builder.spec
  

  My current output isn't exactly like this but basically, I am converting all files and files within subdirectories into a single dictionary like this:

  def fs_tree_to_dict(path_):
      file_token = ''
      for root, dirs, files in os.walk(path_):
          tree = {d: fs_tree_to_dict(os.path.join(root, d)) for d in dirs}
          tree.update({f: file_token for f in files})
          return tree
  

  Right now, my dictionary looks like this: key:''.

  In the following function, I am turning the empty values '' into empty lists (to hold my tags):

  def empty_str_to_list(d):
      for k,v in d.items():
          if v == '':
              d[k] = []
          elif isinstance(v, dict):
              empty_str_to_list(v)
  

  When I run my entire code, this is my output:

  hello_world.dat ['World-Building Tool']
  world_builder.spec ['World-Building Tool']
  

  But it does not see data/world_building_budget.txt. This is the full dictionary:

  {'data': {'world_building_budget.txt': []},  
  'a.txt': [],
  'hello_world.dat': [], 
  'b.exe': [], 
  'world_builder.spec': []}
  
  

  This is my full code:

  import os, argparse
  
  
  def fs_tree_to_dict(path_):
      file_token = ''
      for root, dirs, files in os.walk(path_):
          tree = {d: fs_tree_to_dict(os.path.join(root, d)) for d in dirs}
          tree.update({f: file_token for f in files})
          return tree
  
  
  def empty_str_to_list(d):
      for k, v in d.items():
          if v == '':
              d[k] = []
          elif isinstance(v, dict):
              empty_str_to_list(v)
  
  
  parser = argparse.ArgumentParser(description="Just an example", formatter_class=argparse.ArgumentDefaultsHelpFormatter)
  
  parser.add_argument("--filter", action="store", help="keyword to filter files")
  parser.add_argument("--tag", action="store", help="a tag phrase to attach to a file")
  parser.add_argument("--get_tagged", action="store", help="retrieve files matching an existing tag")
  
  args = parser.parse_args()
  
  filter = args.filter
  tag = args.tag
  get_tagged = args.get_tagged
  current_dir = os.getcwd()
  
  files_dict = fs_tree_to_dict(current_dir)
  empty_str_to_list(files_dict)
  
  for k, v in files_dict.items():
      if filter in k:
          if v == []:
              v.append(tag)
              print(k, v)
  
          elif isinstance(v, dict):
              empty_str_to_list(v)
  
      if get_tagged in v:
          print(k, v)
  
• Actaully i am working on a project and in it, it is showing no module name pip_internal plz help me for the same. I am using pycharm(conda interpreter

   File "C:\Users\pjain\AppData\Local\Programs\Python\Python310\lib\runpy.py", line 196, in _run_module_as_main
      return _run_code(code, main_globals, None,
    File "C:\Users\pjain\AppData\Local\Programs\Python\Python310\lib\runpy.py", line 86, in _run_code
      exec(code, run_globals)
    File "C:\Users\pjain\AppData\Local\Programs\Python\Python310\Scripts\pip.exe\__main__.py", line 4, in <module>
    File "C:\Users\pjain\AppData\Local\Programs\Python\Python310\lib\site-packages\pip\_internal\__init__.py", line 4, in <module>
      from pip_internal.utils import _log
  

  I am using pycharm with conda interpreter.

  
• Looping the function if the input is not string

  I'm new to python (first of all) I have a homework to do a function about checking if an item exists in a dictionary or not.

  inventory = {"apple" : 50, "orange" : 50, "pineapple" : 70, "strawberry" : 30}
  
  def check_item():
      x = input("Enter the fruit's name: ")
      if not x.isalpha():
          print("Error! You need to type the name of the fruit")
      elif x in inventory:
          print("Fruit found:", x)
          print("Inventory available:", inventory[x],"KG")
      else:
          print("Fruit not found")
  check_item()
  

  I want the function to loop again only if the input written is not string. I've tried to type return Under print("Error! You need to type the name of the fruit") but didn't work. Help
• Nested list in C# with layers

  I am not an expert coder and I have just started learning about Generic data types. What I am trying to code is a List inside of a list inside of a list .

  For example- at the first level - I want numbers each inside of a list

  Layer 1 list1=[1,2,3,4,5,6,7,8,9,10......1000] ,

  At the 2nd layer I'd like list from 1st layer added as an element to a parent list 2 when layer 1 meets certain condition- ex layer 1 reaches max=10

  List2=[List1[0:10],List1[10:20],List1[20:30], .....] ,

  At layer 3, i'd like to repeat the process, all elements of layer 2 get added as an element to a new parent list 3 when layer 2 meets a max condition. list3[0]=[list2[0:10],list2[10:20],list2[20:30]..... and so on.

  Only the first layer would have integer values, the successive layer would be a wrapping of it's the previous layer. How can I code this in C#?

  Thanks!
• python list ofwords.the program outputsthosewords&theirfrequencies.Ex:if the input is:hey hi Mark hi mark the output is: hey 1 hi 2 Mark 2 hi 2 mark 2

  I thought I could use this code:

  wordInput = input()
  
  myList = wordInput.split(" ")
  
  for i in myList:
  
     print(i,myList.count(i))
  

  but its output is:

  hey 1
  Hi 1
  Mark 1
  hi 1
  mark 1
  

  How can I make it:

  Hey 1
  Hi 2
  Mark 2
  hi 2
  mark 2
  
• How to convert DataTable to List<T> in C#

  For convert DataTable to List you can used the AutoMapper Library and you can do it automatically
• Is there a way to keep type inference in union types from type guards inside a function?

  Let's say I have three types (and a union one)

  type A = {
      type: 'a'
      title: string
      description: string
  }
  
  type B = {
      type: 'b'
      title: string
  }
  
  type C = {
      type: 'c'
      description: string
  }
  
  type D = A | B | C
  

  I know I can get a correct type inference with the === operator

  function logger(t: D) {
      if (t.type === 'a' || t.type === 'b') console.log(t.title) // no problems here
      if (t.type === 'a' || t.type === 'c') console.log(t.description) // no problems here
  }
  

  However, would it be possible to write an utility function:

  function matches<T extends { type: string }>(t: T, types: T['type'][]) : boolean {
      return types.includes(t.type)
  }
  

  So I can do this without errors?

  function logger(t: D) {
      if (matches(t, ['a', 'b'])) console.log(t.title) // Property 'title' does not exist on type D
      if (matches(t, ['a', 'c'])) console.log(t.description) // Property 'description' does not exist on type D
  }
  
• Alternative to index signature

  I have an array of object like this:

  [
    {
      "bio": "Douglas Gerald Hurley is an American engineer, former Marine Corps pilot and former NASA astronaut. He launched into space for the third time as commander of Crew Dragon Demo-2.",
      "images": {
        "png": "./assets/crew/image-douglas-hurley.png",
        "webp": "./assets/crew/image-douglas-hurley.webp"
      },
      "name": "Douglas Hurley",
      "role": "Commander"
    },
    {
      "bio": "Mark Richard Shuttleworth is the founder and CEO of Canonical, the company behind the Linux-based Ubuntu operating system. Shuttleworth became the first South African to travel to space as a space tourist.",
      "images": {
        "png": "./assets/crew/image-mark-shuttleworth.png",
        "webp": "./assets/crew/image-mark-shuttleworth.webp"
      },
      "name": "Mark Shuttleworth",
      "role": "Mission Specialist"
    },
    {
      "bio": "Pilot on the first operational flight of the SpaceX Crew Dragon to the International Space Station. Glover is a commander in the U.S. Navy where he pilots an F/A-18.He was a crew member of Expedition 64, and served as a station systems flight engineer.",
      "images": {
        "png": "./assets/crew/image-victor-glover.png",
        "webp": "./assets/crew/image-victor-glover.webp"
      },
      "name": "Victor Glover",
      "role": "Pilot"
    },
    {
      "bio": "Anousheh Ansari is an Iranian American engineer and co-founder of Prodea Systems. Ansari was the fourth self-funded space tourist, the first self-funded woman to fly to the ISS, and the first Iranian in space.",
      "images": {
        "png": "./assets/crew/image-anousheh-ansari.png",
        "webp": "./assets/crew/image-anousheh-ansari.webp"
      },
      "name": "Anousheh Ansari",
      "role": "Flight Engineer"
    }
  ]
  

  I typed that with index signature:

      export type PlanetInfo = {
        [key: string]: string;
      }[];
  

  but of course there are also the key "images" that are objects, I resolve that behaviour with:

      export type PlanetInfo = {
            [key: string]: any;
          }[];
  

  but I don't think the use of 'any' is correct. Is there a better way?
• how to make an iterable type in type script that has a key value pair

  I am using type script and I want to make a type that represents an object like this the keys generated are genrated dynamically how do I do that

  {  dog:true,
  cat:true,
  x:true
  }
  

  currently I am just using any but I woud like a proper type

   const matches: any= {}
  

  i get this error when i try to use

  
   {[key: string]: boolean}
  

  Type 'string[] | { [key: string]: boolean; }' must have a '[Symbol.iterator]()' method that returns an iterato
  

  code that causes this error

  const docgetter=()=>
      const matches: { [key: string]: boolean } = {}
      const documentFieldKeys = Array.isArray(documentNames) ? documentNames : Object.keys(documentNames)
    
  
      return [matches, documentFieldKeys]
  
  }
  
  
  
  const [matches,kycKeys]=docgetter()
  
  for(key of kycKeys)