Less frequent (top) to more frequent (bottom)

ArithmeticError
BufferError
BytesWarning
FutureWarning
ImportWarning
PendingDeprecationWarning
SyntaxWarning
TabError
UnicodeTranslateError
UnicodeWarning
UserWarning
DeprecationWarning
IndentationError
FloatingPointError
RuntimeWarning
ReferenceError
UnboundLocalError
Warning
MemoryError
SystemError
OverflowError
StandardError
UnicodeError
LookupError
SyntaxError
NotImplementedError
NameError
UnicodeEncodeError
EOFError
ZeroDivisionError
EnvironmentError
RuntimeError
UnicodeDecodeError
AssertionError
StopIteration
IndexError
TypeError
ImportError
AttributeError
OSError
IOError
KeyError
Exception
ValueError