| AssertionError | Assertion (assert) failure |
| AttributeError | Attempts to access an unknown object properties |
| EOFError | User input end of file mark EOF (Ctrl + d) |
| FloatingPointError | Floating-point calculation error |
| GeneratorExit | generator.close () method is called when |
| ImportError | When importing module failure |
| IndexError | Sequence index out of range |
| KeyError | Dictionary lookup key does not exist |
| KeyboardInterrupt | User input interrupt key (Ctrl + c) |
| MemoryError | Memory overflow (can release memory by deleting objects) |
| NameError | Try to access a variable that does not exist |
| NotImplementedError | The method has not been implemented |
| OSError | Abnormalities (e.g., open a file does not exist) is generated by the operating system |
| OverflowError | Exceeds the maximum limit value calculation |
| ReferenceError | Weak reference (weak reference) has been recovered trying to access a garbage collection objects |
| RuntimeError | General runtime error |
| StopIteration | Iterator no more value |
| SyntaxError | Python syntax errors |
| IndentationError | Indentation errors |
| TabError | Tab and space mix |
| SystemError | Python compiler system error |
| SystemExit | Python compiler process is closed |
| TypeError | Invalid operation between different types of |
| UnboundLocalError | Access to the local variables (NameError subclass) an uninitialized |
| UnicodeError | Unicode related errors (ValueError subclass) |
| UnicodeEncodeError | Unicode error (a UnicodeError subclass) for coding |
| UnicodeDecodeError | Unicode error (a UnicodeError subclass) when decoding |
| UnicodeTranslateError | Unicode error (a UnicodeError subclass) when conversion is |
| ValueError | Invalid parameter passed |
| ZeroDivisionError | Division by zero |
以下是 Python 内置异常类的层次结构：
BaseException
+-- SystemExit
+-- KeyboardInterrupt
+-- GeneratorExit
+-- Exception
+-- StopIteration
+-- ArithmeticError
| +-- FloatingPointError
| +-- OverflowError
| +-- ZeroDivisionError
+-- AssertionError
+-- AttributeError
+-- BufferError
+-- EOFError
+-- ImportError
+-- LookupError
| +-- IndexError
| +-- KeyError
+-- MemoryError
+-- NameError
| +-- UnboundLocalError
+-- OSError
| +-- BlockingIOError
| +-- ChildProcessError
| +-- ConnectionError
| | +-- BrokenPipeError
| | +-- ConnectionAbortedError
| | +-- ConnectionRefusedError
| | +-- ConnectionResetError
| +-- FileExistsError
| +-- FileNotFoundError
| +-- InterruptedError
| +-- IsADirectoryError
| +-- NotADirectoryError
| +-- PermissionError
| +-- ProcessLookupError
| +-- TimeoutError
+-- ReferenceError
+-- RuntimeError
| +-- NotImplementedError
+-- SyntaxError
| +-- IndentationError
| +-- TabError
+-- SystemError
+-- TypeError
+-- ValueError
| +-- UnicodeError
| +-- UnicodeDecodeError
| +-- UnicodeEncodeError
| +-- UnicodeTranslateError
+-- Warning
+-- DeprecationWarning
+-- PendingDeprecationWarning
+-- RuntimeWarning
+-- SyntaxWarning
+-- UserWarning
+-- FutureWarning
+-- ImportWarning
+-- UnicodeWarning
+-- BytesWarning
+-- ResourceWarning