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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def fetch_config(filename):
 """Fetch the Configuration schema information Finds the schema file, loads the file and reads the JSON, then converts to a dictionary that is returned """


    #  This trick gets the directory of *this* file Configuration.py thus
    # allowing to find the schema files relative to this file.
    dir_name = get_source_dir()

    # Append json
    filename = os.path.join('json', filename)

    fileobj = open(os.path.join(dir_name, filename), 'r')
    my_dict = json.loads(fileobj.read())
    return my_dict