Python Type Error: string indices must be integers

So forgive me a little here as im new to python just coming over from JS im having an issue running a string through a function which is meant to return a coloured text for console

File "d:\Dev\DiscordIdleBotPython\venv\ccolours.py", line 16, in colourDyn
    return(f'{colours[colour]}{text}{colours["CCLEAR"]}')
              ~~~~~~~^^^^^^^^
TypeError: string indices must be integers, not 'str'

coloursAvailable={
  "CCLEAR": '\033[0m',
  "COGREEN": '\33[42m'
  }
def colourDyn(text, colour):
  colours=coloursAvailable[colour]

  if colour not in colours: print('colour undefined or not available')
  
  print("function passed colour check")
  return(f'{colours[colour]}{text}{colours["CCLEAR"]}')

Im clearly formatting something wrong but i don’t know where perhaps im not even searching the array correctly?

any help appreciated

>Solution :

Try colours=coloursAvailable in the first line of colourDyn.

Currently, you are already getting the colour from coloursAvailable, thus the error.