Error Undefined Character 583 (0x247): Fix it With 5 Steps

To fix this problem, adjust the code so it can handle undefined characters

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ERROR_UNDEFINED_CHARACTER is a programming error and it’s followed by 583 (0x247) The Unicode character is not defined in the Unicode character set installed on the system message.

This error can prevent your code from running, so let’s see how we can fix it.

How can I fix ERROR_UNDEFINED_CHARACTER?

1. Inspect the string for any invalid characters

  1. Open your code.
  2. Add the following:
    for char in text:
            if not char.isprintable():
                     print(f"Invalid character: {repr(char)}")

    char isprintable
  3. Save changes.

This is a simple Python code that will detect unprintable characters. While this code won’t handle them, it will help you find where these characters occur.

2. Use the correct encoding

  1. Ensure that your file is saved with UTF-8 encoding.
  2. Next, open your code.
  3. Specify UTF-8 when working with files:
    with open("file.txt", "r", encoding="utf-8") as f:
            content = f.read()

    encoding
  4. Save changes.

3. Replace or remove undefined characters

  1. Open your code editor.
  2. In your code, add the following:
    cleaned_text = text.encode('utf-8', errors='replace').decode('utf-8')
    decode text
  3. Save changes.

4. Handle errors in the code

  1. Open your code.
  2. Next, use the try statement like this:
    try:
            process_text(input_text)
    except UnicodeEncodeError:
            print("Undefined Unicode character encountered.")

    try unicodeencodeerror
  3. Save changes.

5. Other tips to try

  1. Verify font support and ensure that the font can handle the problematic characters.
  2. Alternatively, switch to a Unicode-compliant font.
  3. Update the system to get the latest Unicode support.
  4. On Linux, run these lines of code:
    sudo apt-get install locales
    sudo dpkg-reconfigure locales

As you can see, ERROR_UNDEFINED_CHARACTER is a programming error, but in most cases, it can be fixed by adjusting your code to handle undefined characters.

This isn’t the only issue, and we wrote about ERROR_NO_VOLUME_LABEL and Error Label Too Long in our previous guides, so might want to check them out.

You might be interested in ERROR_ILLEGAL_CHARACTER as well, so don’t miss it.

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