Table of Content :
1. “Every syntax error is an exception but every exception cannot be a syntax error.” Justify the statement
.
2. When are the following built-in exceptions raised? Give examples to support your answers.
a) ImportError
b) IOError
c) NameError
d) ZeroDivisionError
3. What is the use of a raise statement? Write a code to accept two numbers and display the quotient. Appropriate exception should be raised if the user enters the second number (denominator) as zero (0).
4. Use assert statement in Question No. 3 to test the division expression in the program.
5. Define the following:
a) Exception Handling
b) Throwing an exception
c) Catching an exception
6. Explain catching exceptions using try and except block
Q1. “Every syntax error is an exception but every exception cannot be a syntax error.” Justify the statement.
Answer : – The statement is true, and it highlights the difference between syntax errors and exceptions in programming.
In programming, syntax errors occur when the code violates the language’s syntax rules. For example, forgetting to close a parenthesis or using an undefined variable. These errors are detected by the compiler or interpreter during the compilation or interpretation phase and prevent the code from running. Thus, every syntax error is an exception because it breaks the normal flow of the program execution.
On the other hand, exceptions are errors that occur during the execution of a program. These errors are not necessarily caused by syntax violations, but rather by unexpected events, such as a division by zero, an invalid file operation, or a network error. Exceptions can be handled by the program to prevent it from crashing, and they may or may not be caused by syntax errors. Therefore, every exception cannot be a syntax error because an exception can be caused by a logical error or an external event that is not related to syntax violations.
In summary, every syntax error is an exception because it interrupts the normal program flow, but every exception cannot be a syntax error because exceptions can be caused by a wide range of unexpected events, not necessarily syntax violations.