Fix: Division by 0 issue in presentation

[Xian55]

Suggested consideration for the submitted code snippet to avoid Division by 0 issue in presentation error message. #51

Division by zero error:

• When calculating the averages (average_latency, average_loss, and average_jitter), you're dividing by len(stats_netprobe['stats']). If stats_netprobe['stats'] is empty, this will raise a ZeroDivisionError.

Type consistency:

• You are converting item['latency'], item['loss'], and item['jitter'] to float before adding them to the totals. Ensure that these values are always present in item and are numeric (either a float or a string that can be converted to a float). If not, this might raise a ValueError.

Redundant looping:

• You are iterating over stats_netprobe['stats'] twice. You can combine the loops to calculate the totals and add the individual metrics in the same iteration, improving efficiency.

Handling missing keys:

• If any of the keys ('latency', 'loss', 'jitter', or 'site') are missing from item, your code will raise a KeyError. You can either check the presence of the keys or use .get() with default values.