Классы исключений

2.8.1.py

# -*- encoding: utf-8 -*-
"""
Деление на ноль
"""

try: 1/0
except ZeroDivisionError: 
   print "caught divide-by-0 attempt" 

2.8.2.py

# -*- encoding: utf-8 -*-
"""
Ошибка использования типа
"""

value = "2" 

print repr(value), "is ",

try:
    value + 0
except TypeError:
    # not a number, maybe a string, Unicode, UserString...?
    try:
        value + ''
    except TypeError:
        print "neither a number nor a string" 
    else:
        print "a string or string-like value" 
else:
    print "a number of some kind" 

2.8.3.py

# -*- encoding: utf-8 -*-
"""
Иерархия встроенных исключений

BaseException
 +-- SystemExit
 +-- KeyboardInterrupt
 +-- GeneratorExit
 +-- Exception
      +-- StopIteration
      +-- StandardError
      |    +-- BufferError
      |    +-- ArithmeticError
      |    |    +-- FloatingPointError
      |    |    +-- OverflowError
      |    |    +-- ZeroDivisionError
      |    +-- AssertionError
      |    +-- AttributeError
      |    +-- EnvironmentError
      |    |    +-- IOError
      |    |    +-- OSError
      |    |         +-- WindowsError (Windows)
      |    |         +-- VMSError (VMS)
      |    +-- EOFError
      |    +-- ImportError
      |    +-- LookupError
      |    |    +-- IndexError
      |    |    +-- KeyError
      |    +-- MemoryError
      |    +-- NameError
      |    |    +-- UnboundLocalError
      |    +-- ReferenceError
      |    +-- RuntimeError
      |    |    +-- NotImplementedError
      |    +-- SyntaxError
      |    |    +-- IndentationError
      |    |         +-- TabError
      |    +-- SystemError
      |    +-- TypeError
      |    +-- ValueError
      |         +-- UnicodeError
      |              +-- UnicodeDecodeError
      |              +-- UnicodeEncodeError
      |              +-- UnicodeTranslateError
      +-- Warning
           +-- DeprecationWarning
           +-- PendingDeprecationWarning
           +-- RuntimeWarning
           +-- SyntaxWarning
           +-- UserWarning
           +-- FutureWarning
       +-- ImportWarning
       +-- UnicodeWarning
       +-- BytesWarning
"""