Quark's Outlines: Python Exceptions

Quark’s Outlines: Python Exceptions Overview, Historical Timeline, Problems & Solutions An Overview of Python Exceptions What is a Python exception? When you run a Python program, you may hit a problem. You may divide by zero or try to open a file that does not exist. A Python exception is a signal that something went wrong. Python stops normal work and looks for a way to handle the error. Python lets you catch the exception and run other code instead. This helps you control what happens when there is a problem. You can raise your own exceptions. You can also handle built-in ones like ZeroDivisionError or FileNotFoundError . Python lets you raise and handle exceptions to control errors. try : x = 1 / 0 except ZeroDivisionError : print ( " You cannot divide by zero. " ) # prints: # You cannot divide by zero. The try block runs code. If it fails, Python jumps to the except block. How do Python exceptions work? When a Python error happens, Python raises an exception. The exception can be