Create a new Python script named data$\_$parser.py$.$

Import the 'json' and $\text{'}$xml$.$etree.ElementTree' modules.

Write a function named 'json$\_$parser'. This function should:

Take a JSON string as an argument.

Use the 'json' module to convert the JSON string into a Python dictionary.

Return the resulting dictionary.

Write a function named $\text{'}$xml$\_$parser'. This function should:

Take an XML string as an argument.

Use the $\text{'}$xml$.$etree.ElementTree' module to parse the XML string and get the root element of the XML document.

Implement a function to iterate through the XML elements and convert it into a nested Python dictionary.

Return the resulting dictionary.

In your main program, test the 'json$\_$parser' and $\text{'}$xml$\_$parser' functions with various inputs and make sure your code runs without errors and produces the expected output.