`exceptions`¶

Python’s standard exception class hierarchy.

Exceptions found here are defined both in the exceptions module and the built-in namespace. It is recommended that user-defined exceptions inherit from Exception. See the documentation for the exception inheritance hierarchy.

Exceptions¶

`ArithmeticError`	Base class for arithmetic errors.
`AssertionError`	Assertion failed.
`AttributeError`	Attribute not found.
`BaseException`	Common base class for all exceptions
`BufferError`	Buffer error.
`BytesWarning`	Base class for warnings about bytes and buffer related problems, mostly related to conversion from str or comparing to str.
`DeprecationWarning`	Base class for warnings about deprecated features.
`EOFError`	Read beyond end of file.
`EnvironmentError`	Base class for I/O related errors.
`Exception`	Common base class for all non-exit exceptions.
`FloatingPointError`	Floating point operation failed.
`FutureWarning`	Base class for warnings about constructs that will change semantically in the future.
`GeneratorExit`	Request that a generator exit.
`IOError`	I/O operation failed.
`ImportError`	Import can’t find module, or can’t find name in module.
`ImportWarning`	Base class for warnings about probable mistakes in module imports
`IndentationError`	Improper indentation.
`IndexError`	Sequence index out of range.
`KeyError`	Mapping key not found.
`KeyboardInterrupt`	Program interrupted by user.
`LookupError`	Base class for lookup errors.
`MemoryError`	Out of memory.
`NameError`	Name not found globally.
`NotImplementedError`	Method or function hasn’t been implemented yet.
`OSError`	OS system call failed.
`OverflowError`	Result too large to be represented.
`PendingDeprecationWarning`	Base class for warnings about features which will be deprecated in the future.
`ReferenceError`	Weak ref proxy used after referent went away.
`RuntimeError`	Unspecified run-time error.
`RuntimeWarning`	Base class for warnings about dubious runtime behavior.
`StandardError`	Base class for all standard Python exceptions that do not represent interpreter exiting.
`StopIteration`	Signal the end from iterator.next().
`SyntaxError`	Invalid syntax.
`SyntaxWarning`	Base class for warnings about dubious syntax.
`SystemError`	Internal error in the Python interpreter.
`SystemExit`	Request to exit from the interpreter.
`TabError`	Improper mixture of spaces and tabs.
`TypeError`	Inappropriate argument type.
`UnboundLocalError`	Local name referenced but not bound to a value.
`UnicodeDecodeError`	Unicode decoding error.
`UnicodeEncodeError`	Unicode encoding error.
`UnicodeError`	Unicode related error.
`UnicodeTranslateError`	Unicode translation error.
`UnicodeWarning`	Base class for warnings about Unicode related problems, mostly related to conversion problems.
`UserWarning`	Base class for warnings generated by user code.
`ValueError`	Inappropriate argument value (of correct type).
`Warning`	Base class for warning categories.
`ZeroDivisionError`	Second argument to a division or modulo operation was zero.