id	summary	reporter	owner	description	type	status	priority	milestone	component	resolution	keywords	cc	parents
5386	PIL.Image.save() need format parameter when using file object	宋文武		"Hi!  when upload a jpg file, I got:
{{{
[...]
  File ""...src/mediagoblin/mediagoblin/media_types/image/processing.py"", 
line 125, in resize_tool
    quality, filter)
  File ""...src/mediagoblin/mediagoblin/media_types/image/processing.py"", 
line 81, in resize_image
    resized.save(resized_file, quality=quality)
  File ""...lib/python3.4/site-packages/Pillow-3.0.0-py3.4-linux-x86_64.egg/PIL/Image.py"", line 1649, in save
    format = EXTENSION[ext]
KeyError: ''
[...]
}}}

According to https://pillow.readthedocs.org/en/3.0.x/reference/Image.html?highlight=save#PIL.Image.Image.save
when use file object instead of filename, the '''format''' parameter should always be used."	defect	closed	major	0.9.0	programming	fixed