Human: Python functions to best way to stringify a date. Assistant: 
Here is a Python function to best way to stringify a date

import datetime

def _best_date_format(dt):
    """
    >>> dt = datetime.datetime(2018, 1, 1)
    >>> _best_date_format(dt)
    '2018-01-01'
    """
    return dt.strftime("%Y-%m-%d")

# Enter the date
dt = datetime.datetime.now()

# Calling the function
print((_best_date_format(dt)))

#Example Output
# 2023-01-16

#Remember to inspect code for bugs.