Saving an image with a colon in its name results in an incorrect file name

[taranlu-houzz]

• Create a wand.image.Image
• Try to save the image with a filename that includes a colon:

  img.save(filename="beep:boop.png")

• Resulting file is called boop.png

OS: macOS 13.6.6 (22G630)
CPU: M1Pro

[emcconville]

The colon character is restricted with ImageMagick as it's part of the coder protocol. For example...

# Force PNG 48-bit RGB
img.save(filename='png48:boop.png')

Possible Solutions

• You can try to double escape it.

  img.save(filename="beep\\:boop.png")

• Use a file object.

  with open('beep:boop.png', 'wb')  as fh:
      img.save(file=fh)