def revcomp_str(seq):
	"""
	Returns the reverse complement of a `str` nucleotide sequence.

	Parameters
	----------
	+ seq `str` nucleotide sequence
	"""

	comp = str.maketrans('ACGTRYMKWSBDHV', 'TGCAYRKMWSVHDB')
	anti = seq.translate(comp)[::-1]
	return anti