Python built-in error and exception statements

27-10-24 Ahmed Obaid 2283 0
words: 602 | reading time: 6 minute

Python contains a number of built-in exceptions, such as the known errors SyntaxError, NameError, and TypeError. It is embedded, meaning it is present in the source code at all times.

When an error occurs, Python throws a set of built-in exceptions. These built-in exceptions can be caught using the built-in local() function, which is as follows:



print(dir(locals()['__builtins__']))

The output will be:


['ArithmeticError', 'AssertionError', 'AttributeError', 'BaseException', 'BlockingIOError', 'BrokenPipeError', 'BufferError', 
'BytesWarning', 'ChildProcessError', 'ConnectionAbortedError', 'ConnectionError', 'ConnectionRefusedError', 'ConnectionResetError', 
'DeprecationWarning', 'EOFError', 'Ellipsis', 'EnvironmentError', 'Exception', 'False', 'FileExistsError', 'FileNotFoundError', 'FloatingPointError', 
'FutureWarning', 'GeneratorExit', 'IOError', 'ImportError', 'ImportWarning', 'IndentationError', 'IndexError', 'InterruptedError', 'IsADirectoryError', 
'KeyError', 'KeyboardInterrupt', 'LookupError', 'MemoryError', 'ModuleNotFoundError', 'NameError', 'None', 'NotADirectoryError', 'NotImplemented', 
'NotImplementedError', 'OSError', 'OverflowError', 'PendingDeprecationWarning', 'PermissionError', 'ProcessLookupError', 'RecursionError', 'ReferenceError', 
'ResourceWarning', 'RuntimeError', 'RuntimeWarning', 'StopAsyncIteration', 'StopIteration', 'SyntaxError', 'SyntaxWarning', 'SystemError', 'SystemExit', 
'TabError', 'TimeoutError', 'True', 'TypeError', 'UnboundLocalError', 'UnicodeDecodeError', 'UnicodeEncodeError', 'UnicodeError', 'UnicodeTranslateError', 
'UnicodeWarning', 'UserWarning', 'ValueError', 'Warning', 'ZeroDivisionError', '__build_class__', '__debug__', '__doc__', '__import__', '__loader__', '__name__', 
'__package__', '__spec__', 'abs', 'all', 'any', 'ascii', 'bin', 'bool', 'breakpoint', 'bytearray', 'bytes', 'callable', 'chr', 'classmethod', 'compile', 'complex', 'copyright', 
'credits', 'delattr', 'dict', 'dir', 'divmod', 'enumerate', 'eval', 'exec', 'exit', 'filter', 'float', 'format', 'frozenset', 'getattr', 'globals', 'hasattr', 'hash', 'help', 'hex', 'id', 'input', 
'int', 'isinstance', 'issubclass', 'iter', 'len', 'license', 'list', 'locals', 'map', 'max', 'memoryview', 'min', 'next', 'object', 'oct', 'open', 'ord', 'pow', 'print', 'property', 'quit', 
'range', 'repr', 'reversed', 'round', 'set', 'setattr', 'slice', 'sorted', 'staticmethod', 'str', 'sum', 'super', 'tuple', 'type', 'vars', 'zip']

The following table lists the most common built-in exceptions:





































































































































Exception Cause of Error
AssertionError When an assert statement fails, an error is raised.
ArithmeticError It specifies when an error in numerical calculations occurs.
AttributeError When attribute assignment or reference fails, this exception is raised.
EOFError When the input() method encounters a “end of file” circumstance, it throws an error (EOF)
FloatingPointError When a floating-point calculation fails, this error is generated.
GeneratorExit When the close() method of a generator is called, this variable is raised.
ImportError When the imported module cannot be found, this exception is thrown.
IndexError When the index of a sequence is out of range, this value is raised.
KeyError When a key is not found in a dictionary, this error is raised.
KeyboardInterrupt When the user pushes Ctrl+C, Ctrl+Z, or Delete, this exception is thrown.
MemoryError When a program runs out of memory, an error is generated.
NameError When a variable is not discovered in the local or global scope, this exception is raised.
NotImplementedError Raised through abstract methods.
OSError When a system operation results in a system-related error, this flag is raised.
OverflowError When the result of a numerical calculation is too huge, an error is raised.
ReferenceError This Is an Exception When a weak reference object does not exist, an error is raised.
RuntimeError When an error does not fit into any of the other categories, it is raised.
StopIteration Raised by the next() function to indicate that the iterator has no more items to return.
SyntaxError When a syntax problem occurs, the parser raises this exception.
IndentationError It raises an error when the indentation is incorrect.
TabError It raises an error when the indentation consists of tabs or spaces.
SystemError It is triggered when a system error occurs.
SystemExit The sys.exit() function raised this exception.
TypeError When a function or operation is applied to an object of the wrong type, this exception is raised.
UnboundLocalError When a reference to a local variable in a function or method is made but no value is bound to that variable, an exception is raised.
UnicodeError When a Unicode-related encoding or decoding problem occurs, this flag is raised.
UnicodeEncodeError When a Unicode-related problem occurs during encoding, this flag is raised.
UnicodeDecodeError When a Unicode-related error occurs while decoding, this flag is raised.
UnicodeTranslateError It defines an error. When there is an issue with a Unicode translation, this flag is raised.
ValueError When there is an incorrect value in a specified data type, this exception is raised.
ZeroDivisionError When the second operator in a division is zero, an error is raised.

You can learn more about exceptions in Python through the following link>>

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python-exception Errors and exceptions built into Python

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