问Pyqt范围输入小部件和python范围

EN

from itertools import chain
def my_range(*args):
    args = map(int,args)                                                               
    if len(args) == 1:
        return args
    return range(args[0], args[1]+1)

def func(strs):
    return list(chain.from_iterable(my_range(*x.split('-')) for x in strs.split(', ')))
strs = "1, 3-4, 7-9"
print func(strs)
#[1, 3, 4, 7, 8, 9]

def expander(inpt):
    ret = []
    for token in inpt.split(','):
        if '-' in token:
            a, b = token.strip().split('-')
            ret.extend(range(int(a), int(b)+1))
        else:
            ret.append(int(token))
    return ret

print(expander('1, 3-4, 7-9'))