PIL — is a Python image library that provides the Python interpreter with image editing capabilities. The
Image module provides a class with the same name that is used to represent a PIL image. The module also provides a number of factory functions, including the function of loading images from files and creating new images.
Image.save() Saves this image under the specified file name. If no format is specified, the format used is determined by the filename extension, if applicable.
Keyword parameters can be used to provide additional instructions to the author. If the author does not recognize the parameter, it is ignored. The available options are described in the image format documentation for each author.
You can use a file object instead of a file name. In this case, you must always specify the format. The file object must implement search, point, and write methods and must be opened in binary mode.
Syntax: Image.save (fp, format = None, ** params )
fp - A filename (string), pathlib.Path object or file object.
format - Optional format override. If omitted, the format to use is determined from the filename extension. If a file object was used instead of a filename, this parameter should always be used.
options - Extra parameters to the image writer.
KeyError - If the output format could not be determined from the file name. Use the format option to solve this.
IOError - If the file could not be written. The file may have been created, and may contain partial data.