Error handling in Python

Error handling is an important part of writing Python programs. It allows you to catch and handle errors and exceptions that may occur in your program, so that it can continue to run smoothly.

There are several ways to handle errors in Python. One of the most common is to use the try and except statements. Here's an example of how you might use these statements:

try:
    # some code here
except SomeException:
    # code to handle the exception

The try block contains the code that might throw an exception. If an exception is raised while this code is being executed, the program will jump to the except block and execute the code there. If no exception is raised, the except block is skipped.

You can also specify multiple exceptions to catch by separating them with a comma, like this:

try:
    # some code here
except SomeException, AnotherException:
    # code to handle the exception

You can also use the finally block to specify code that should be executed whether an exception is raised or not. This is often used to clean up resources that were being used, such as closing a file or database connection.

try:
    # some code here
except SomeException:
    # code to handle the exception
finally:
    # clean up code

You can also raise your own exceptions using the raise statement. This is useful when you want to signal that something has gone wrong in your program, and you want to stop execution.

if some_condition:
    raise SomeException("An error occurred")

Try ... Catch Example

Here's a typical example of how try and except can be used in Python:

number = 10
name = "John"

print(name)

try:
    print(str(number) + name)
    print(name/number)
except Exception as e:
    print(e)

age = 40
print(age + number)

Try ... Catch ... Finally Example

joy = "Joy"
ella = "Emmanuella"

try:
    value = len(joy)/ella # this will throw an error
    print(value)
except Exception as e:
    print("Error: ", e)
    value = len(joy)/len(ella)
    print("Error resolution" + " " + str(value))
finally:
    print("Finally, We implemented error handling here")

Try ... Catch ... else Example

In Python, the try and except statements are used to handle exceptions, which are runtime errors that can occur when executing a program. The try block contains code that may throw an exception, and the except block contains code that will be executed if an exception is thrown.

The else clause is optional and is used to specify a block of code that should be executed only if the try block does not throw an exception

try:
    value = len(joy)/ella # this will throw an error
    print(value)
except Exception as e:
    print("Error: ", e)
    value = len(joy)/len(ella)
    print("Error resolution" + " " + str(value))
else:
    print("This would print if there's no error")