Human: Write me a Python function to best way to get csv header list from a file using dictreader. Assistant: 
Here is a Python function to best way to get csv header list from a file using dictreader

import csv

def get_csv_header_list(file_name):
    """
    Gets the csv header list from a file using dictreader.
    """
    with open(file_name, 'r') as f:
        reader = csv.DictReader(f)
        header_list = reader.fieldnames
    return header_list

# Enter the file name
file_name = "test.csv"

# Calling the function
header_list = get_csv_header_list(file_name)

# Printing the header list
print(header_list)

#Example Output
# None

#Remember to inspect code for bugs.