mysql_to_bool.py

from numpy import vectorize

def mysql_bit_to_bool(values):
    """Return Python [an array of] boolean values."""

    mysql_bits = {'\x01': True, '\x00': False}

    def wrapper(value):
        return mysql_bits[value]

    return vectorize(wrapper)(values)

mysql_to_bool_simple.py

def mysql_bit_to_bool(value):
  """Return Python [an array of] boolean values."""
  
    mysql_bits = {'\x01': True, '\x00': False}
    
    return mysql_bits[value]

Which one is better? Is it ever advantageous from a performance perspective to "vectorize" a function?