Internal reference¶ File handling in Pillow Image lifecycle Complications Proposed file handling Limits Internal limits Format size limits Block allocator Previous design New design Memory pools Internal modules _binary module _deprecate module _tkinter_finder module _typing module _util module _version module PIL.Image.core module C extension debugging on Linux, with GBD/Valgrind Install the tools Test case Caveats Arrow support Data formats Memory allocator Unsupported features Internal details