Operating system: win7
After successfully installing Pillow (version 4.1.0) on Python3.5, the source code reported an error: 
伊谢尔伦2017-05-18 10:59:18
Because there is no __builtin__ in Python3, that is the syntax of python2
为情所困2017-05-18 10:59:18
__builtins__
>>> dir()
['__builtins__', '__doc__', '__loader__', '__name__', '__package__', '__spec__']