How to let the user add 'None' to an specific array in a dictionary?

[noahverner1995]

Ok so, the question may sound confusing at first but I'm gonna do my best to explain what I would like to learn in order to improve my programming skills.

Let's say I have a path in which exists 6 folders with the following file images:

Color:

• Amarillo.png
  
• Blanco.png
  
• Rojirosado.png
  
• Turquesa.png
  
• Verde_oscuro.png
  
• Zapote.png
  

Cuerpo:

• Cuerpo_cangrejo.png
  

Fondo:

• Oceano.png
  

Ojos:

• Antenas.png
  
• Pico.png
  
• Verticales.png
  

Pinzas:

• Pinzitas.png
  
• Pinzotas.png
  
• Pinzota_pinzita.png
  

Puas:

• Arena.png
  
• Marron.png
  
• Purpura.png
  
• Verde.png
  

Now, I want the above information to be stored in a dictionary for further use, so I run the code below in the same path in which the folders previously mentioned exist:

import os
# Main method
the_dictionary_list = {}

for name in os.listdir("."):
    if os.path.isdir(name):
        path = os.path.basename(name)
        print(f'\u001b[45m{path}\033[0m')
        list_of_file_contents = os.listdir(path)
        print(f'\033[46m{list_of_file_contents}')
        the_dictionary_list[path] = list_of_file_contents
        print('\n')
print('\u001b[43mthe_dictionary_list:\033[0m')
print(the_dictionary_list)

So after compiling the program above I get my dictionary:



But here's the problem: After creating the dictionary, how can I let the user decide in which arrays to add a 'None' string as a new value (i.e. not replacing the current ones), meaning that, for instance, if the user wanted to add 'None' only to Puas Array and Pinzas Array, it would generate the following output?

the_dictionary_list: {
'Color': ['Amarillo.png', 'Blanco.png','Rojirosado.png', 'Turquesa.png', 'Verde_oscuro.png', 'Zapote.png'],
'Cuerpo': ['Cuerpo_cangrejo.png'],
'Fondo': ['Oceano.png'],
'Ojos': ['Antenas.png', 'Pico.png', 'Verticales.png'],
'Pinzas': ['None', 'Pinzitas.png', 'Pinzotas.png', 'Pinzota_pinzita.png'],
'Puas': ['None', 'Arena.png', 'Marron.png', 'Purpura.png', 'Verde.png']}