Exception handling is being used not only in Python programming but in most programming languages like C++, Java, Ruby, etc. It is a useful technique that helps in capturing runtime errors and handling them so as to avoid the program getting crashed.
Following are some of the important points regarding exceptions and their handling:
• Python categorises exceptions into distinct types so that specific exception handlers (code to handle that particular exception) can be created for each type.
• Exception handlers separate the main logic of the program from the error detection and correction code. The segment of code where there is any possibility of error or exception, is placed inside one block. The code to be executed in case the exception has occurred, is placed inside another block. These statements for detection and reporting the exception do not affect the main logic of the program.
• The compiler or interpreter keeps track of the exact position where the error has occurred.
• Exception handling can be done for both user-defined and built-in exceptions.
