Common python functions

common.py

def expand(lst):
	""""
	Expand a list/tuple of lists/tuples of lists/tuples of ... of values into a single list
	"""
	exp = []
	for item in lst:
		if type(item) is list or type(item) is tuple:
			exp += expand(item)
		else:
			exp.append(item)
	return exp

def sliceBits(num, msb, lsb=None):
	"""
	Slice bits from an integer from the msb to the lsb (inclusive) and 0-indexed
	If no lsb is provided it will only grab the one bit at the msb specified
	num - the number
	msb - the most significant bit to keep
	lsb - the least significant bit to keep
	ex. SliceBits(0xF000, 15, 12) = 0xF
	ex. SliceBits(0x7800, 14, 11) = 0xF
	"""
	width = (msb-lsb+1) if lsb is not None else 1
	return (((2**(width))-1 << msb-width+1) & num) >> msb-width+1