Create a new file named log$\_$analyzer.py in the directory you created for this application. This file will be a module that you will include into your main directive code.

In the log$\_$analyzer.py file, create a new Python class named LogEntry. Each object of class LogEntry will represent one line in the CSV file.

The LogEntry class will have the following attributes: event$\_$time, internal$\_$ip$,$ port$\_$number, protocol, action, rule$\_$id$,$ source$\_$ip$,$ country, and country$\_$name. The other fields are optional.

The CSV file contains a string with the date and time information. In the initializer for the LogEntry class, use the Python datetime package to ensure that the value for event$\_$date is stored as a datetime object. $($This will be important later.$)$

Add a property to the LogEntry class called ipv$4\_$class that uses a regular expression to examine the source$\_$ip and returns the string value of the IPv$4$ address class $($which will be either $$A$,$B$,$C$,$ or $$D$)$ based on the public IP address range. For example, the source$\_$ip $11\mathrm{.}177\mathrm{.}69\mathrm{.}220$ will return $$A$$ and the source$\_$ip $173\mathrm{.}205\mathrm{.}219\mathrm{.}112$ will return $$C$.$

Think: How can you find just the first component of an IPv$4$ address?

Write Unit Tests for the LogEntry Class

Create a new file named test$\_$log$\_$analyzer.py in the directory you created for this application. Write several unit tests that evaluate the following functionality of your LogEntry class:

$1.$ Ensure that the event$\_$time string is properly converted to a datetime object.

a$.$ For example, you could create a new instance of LogEntry with a string value of $2022-01-0108$:$29$:$25$ UTC$$ for the event$\_$time. You could then assert that the month of the resulting datetime object $==1.$

b$.$ You could also assert that the hour of the resulting datetime object $==8.$

$2.$ Ensure that the ipv$4\_$class returns the correct IPv$4$ address class

a$.$ For example, you can assert that the ipv$4\_$class $==$D$$ for the source$\_$ip $229\mathrm{.}163\mathrm{.}4\mathrm{.}51$

Write several tests $($asserts$)$ for each of the above scenarios to ensure your class is behaving correctly. Make sure all your tests pass before moving on$.$

THINK: What else could go wrong when converting the CSV to objects of class LogEntry?