Exception Handling

An error that happens during execution of a program.

When that error occurs, Python generate an exception that can be handled, which avoids your program to crash

• True

• False

Exceptions are convenient in many ways for handling errors and special conditions in a program. When you think that you have a code which can produce an error then you can use exception handling.

• True

• False

You can raise an exception in your own program by using the ___________________.

Raising an exception breaks current code execution and returns the exception back until it is handled

• True

• False

Example for Exception Cases

• IOError

• ImportError

• ValueError

• RangeError

If the file cannot be opened

• IOError

• ImportError

• ValueError

• IndexError

If python cannot find the module

• IOError

• ValueError

• TypeError

• ImportError

Raised when a function receives an argument that has the right type but an inappropriate value

• TypeError

• ValueError

• ImportError

• IOError

Types of Exceptions: Checked

• Checked exceptions are checked at compile time.

• Exceptions are “checked” because they are subject to the “ catch ” or specify requirement.” Otherwise, the program code will not compile.

• Examples: Invalid Syntax, Incorrect statements

• Also called Compile-time