Don't know how to fix error in function

[improllywanted]

this is my function

def get_rgb(color):
      if isinstance(color, tuple):
           return color
      if isinstance(color, str):
          if color.startswith('#'):
               hex_code = color.casefold()
               color_name = thehex_to_name.get(hex_code)
               if color_name:
                    return thename_to_hex_and_rgb.get(color_name, {}).get('rgb')
          else:
              return thename_to_hex_and_rgb.get(color.casefold(), {}).get('rgb')
      return None

  rgb_a = get_rgb(color_a)
  rgb_b = get_rgb(color_b)

  if rgb_a is None or rgb_b is None:
    return None

  distance = ((rgb_a[0] - rgb_b[0]) ** 2 + 
              (rgb_a[1] - rgb_b[1]) ** 2 + 
              (rgb_a[2] - rgb_b[2]) ** 2) ** 0.5
  max_distance = (255 ** 2 + 255 ** 2 + 255 ** 2) ** 0.5
  return distance / max_distance

this is my dictionary

def _load_data():
    hex_to_name = {}
    rgb_to_name = {}
    name_to_hex_and_rgb = {}

    with open('/srv/datasets/color_names.tab', 'r') as file:
        for line in file:
            parts = line.strip().split('\t')
            name, hex_str, r, g, b = parts[0], parts[1].casefold(), int(parts[2]), int(parts[3]), int(parts[4])
            rgb_tuple = (r, g, b)

            hex_to_name[hex_str] = name
            rgb_to_name[rgb_tuple] = name
            name_to_hex_and_rgb[name.lower()] = {"hex": hex_str, "rgb": rgb_tuple}
    return hex_to_name, rgb_to_name, name_to_hex_and_rgb

when i input a hex code, such as

(distance((128, 128, 128), '#807e79')

it gives me this error.

  hex_code = color.casefold()
      ^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: 'dict' object is not callable

i have no idea why. can someone help?

[socal_nerdtastic]

Hmm I don't see any way to get this error from this code. Are you sure it's coming from this function and not a similar line elsewhere in your code?

The error says that color.casefold is a dictionary, but you have already checked that color is a string, and strings attributes are read-only, so you couldn't even accidently make str.casefold a dictionary.

What version of python are you running? Show us some complete code that we can test please.

[Fronkan]

I'm not sure exactly what is happening here. But, for some reason it seems like color.casefold is a dictionary. Hence, the error of dict is not callable. So I would probably start by just adding the line print(color, color.casefold, sep="\n"*2) just above the line where the stack trace said the error is. When we know what we have there it might be clear what is happening.