utils.py 文件源码

def rev_comp(string):
    """Outputs reverse complement of a nucleotide sequence"""
    if sys.version_info.major == 2:
        import string as st
        complement = string.translate(st.maketrans('ACGT', 'TGCA'))
    else:
        complement = string.translate(str.maketrans('ACGT', 'TGCA'))
    return complement[::-1]