35 | | +-- WindowsError (Windows) 36 37 | | +-- VMSError (VMS) 38 39 | +-- EOFError 40 41 | +-- ImportError 42 43 | +-- LookupError 44 45 | | +-- IndexError 46 47 | | +-- KeyError 48 49 | +-- MemoryError 50 51 | +-- NameError 52 ...