Bitwise manipulation

bitutils.py

def testBit(int_type, offset):
  """ testBit() returns a nonzero result, 2**offset, if the bit at 'offset' is one. """
    mask = 1 << offset
    return(int_type & mask)

def setBit(int_type, offset):
  """ setBit() returns an integer with the bit at 'offset' set to 1. """"
    mask = 1 << offset
    return(int_type | mask)

def clearBit(int_type, offset):
    """ clearBit() returns an integer with the bit at 'offset' cleared."""
    mask = ~(1 << offset)
    return(int_type & mask)

def toggleBit(int_type, offset):
  """ toggleBit() returns an integer with the bit at 'offset' inverted, 0 -> 1 and 1 -> 0."""
    mask = 1 << offset
    return(int_type ^ mask)