Convert hyphen string to list of integers

hypen_range.py

def hyphen_range(s):
    """From hyphen string to list of integers"""
    if not s:
        return []

    result = []
    for x in s.split(','):
        try:
            result.append(int(x))
        except ValueError:
            couple, step = x.split(':')
            start, end = couple.split('-')
            result.extend(range(int(start), int(end) + 1, int(step)))
    return result