PYTHON

python exception list

AssertionError			#Raised when assert statement fails.
AttributeError			#Raised when attribute assignment or reference fails.
EOFError				#Raised when the input() functions hits end-of-file condition.
FloatingPointError		#Raised when a floating point operation fails.
GeneratorExit			#Raise when a generator's close() method is called.
ImportError				#Raised when the imported module is not found.
IndexError				#Raised when index of a sequence is out of range.
KeyError				#Raised when a key is not found in a dictionary.
KeyboardInterrupt		#Raised when the user hits interrupt key (Ctrl+c or delete).
MemoryError				#Raised when an operation runs out of memory.
NameError				#Raised when a variable is not found in local or global scope.
NotImplementedError		#Raised by abstract methods.
OSError					#Raised when system operation causes system related error.
OverflowError			#Raised when result of an arithmetic operation is too large to be represented.
ReferenceError			#Raised when a weak reference proxy is used to access a garbage collected referent.
RuntimeError			#Raised when an error does not fall under any other category.
StopIteration			#Raised by next() function to indicate that there is no further item to be returned by iterator.
SyntaxError				#Raised by parser when syntax error is encountered.
IndentationError		#Raised when there is incorrect indentation.
TabError				#Raised when indentation consists of inconsistent tabs and spaces.
SystemError				#Raised when interpreter detects internal error.
SystemExit				#Raised by sys.exit() function.
TypeError				#Raised when a function or operation is applied to an object of incorrect type.
UnboundLocalError		#Raised when a reference is made to a local variable in a function or method, but no value has been bound to that variable.
UnicodeError			#Raised when a Unicode-related encoding or decoding error occurs.
UnicodeEncodeError		#Raised when a Unicode-related error occurs during encoding.
UnicodeDecodeError		#Raised when a Unicode-related error occurs during decoding.
UnicodeTranslateError	#Raised when a Unicode-related error occurs during translating.
ValueError				#Raised when a function gets argument of correct type but improper value.
ZeroDivisionError		#Raised when second operand of division or modulo operation is zero.

python exceptions

#Syntax:

try:
	statement
except Exception as varname:
	statement
   
"""
Some specific exceptions (Lengthy but time-saving )- 

ArithmeticError - Raised when an error occurs in numeric calculations

AssertionError	- Raised when an assert statement fails

AttributeError	- Raised when attribute reference or assignment fails

Exception - Base class for all exceptions

EOFError -	Raised when the input() method hits an "end of file" condition (EOF)

FloatingPointError -	Raised when a floating point calculation fails

GeneratorExit -	Raised when a generator is closed (with the close() method)

ImportError -	Raised when an imported module does not exist

IndentationError -	Raised when indendation is not correct

IndexError -	Raised when an index of a sequence does not exist

KeyError -	Raised when a key does not exist in a dictionary

KeyboardInterrupt -	Raised when the user presses Ctrl+c, Ctrl+z or Delete

LookupError -	Raised when errors raised cant be found

MemoryError -	Raised when a program runs out of memory

NameError -	Raised when a variable does not exist

NotImplementedError -	Raised when an abstract method requires an inherited class to override the method

OSError -	Raised when a system related operation causes an error

OverflowError -	Raised when the result of a numeric calculation is too large

ReferenceError -	Raised when a weak reference object does not exist

RuntimeError -	Raised when an error occurs that do not belong to any specific expections

StopIteration -	Raised when the next() method of an iterator has no further values

SyntaxError -	Raised when a syntax error occurs

TabError -	Raised when indentation consists of tabs or spaces

SystemError -	Raised when a system error occurs

SystemExit -	Raised when the sys.exit() function is called

TypeError -	Raised when two different types are combined

UnboundLocalError -	Raised when a local variable is referenced before assignment

UnicodeError -	Raised when a unicode problem occurs

UnicodeEncodeError -	Raised when a unicode encoding problem occurs

UnicodeDecodeError -	Raised when a unicode decoding problem occurs

UnicodeTranslateError -	Raised when a unicode translation problem occurs

ValueError -	Raised when there is a wrong value in a specified data type

ZeroDivisionError -	Raised when the second operator in a division is zero

"""

python exception

try:
    # raise a custom exception
    raise Exception("A custom exception")
except Exception as err:
    print(err)
finally:
    print('This execute no matter if an exception occurs or not')

python exception

try:
  # code block
except ValueError as ve:
  print(ve)

python exceptions

while True:
    try:
        funds = float(input("Enter amount to transfer: "))
        if funds < 0:
            raise Exception("Please enter a positive value,")
        break
    except ValueError:
        print("Please enter a numeric value,")

python exceptions

BaseException
 +-- SystemExit
 +-- KeyboardInterrupt
 +-- GeneratorExit
 +-- Exception
      +-- StopIteration
      +-- StopAsyncIteration
      +-- ArithmeticError
      |    +-- FloatingPointError
      |    +-- OverflowError
      |    +-- ZeroDivisionError
      +-- AssertionError
      +-- AttributeError
      +-- BufferError
      +-- EOFError
      +-- ImportError
      |    +-- ModuleNotFoundError
      +-- 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
      |    +-- RecursionError
      +-- SyntaxError
      |    +-- IndentationError
      |         +-- TabError
      +-- SystemError
      +-- TypeError
      +-- ValueError
      |    +-- UnicodeError
      |         +-- UnicodeDecodeError
      |         +-- UnicodeEncodeError
      |         +-- UnicodeTranslateError
      +-- Warning
           +-- DeprecationWarning
           +-- PendingDeprecationWarning
           +-- RuntimeWarning
           +-- SyntaxWarning
           +-- UserWarning
           +-- FutureWarning
           +-- ImportWarning
           +-- UnicodeWarning
           +-- BytesWarning
           +-- ResourceWarning

python exception

#!/bin/python3

import sys


S = input().strip()

try:
    S = int(S)
    print(S)
except:
    print("Bad String")