在此插入代码
from functools import reduce
d = {} for i in range(10): d[str(i)] = i
def str2int(s): return d[s] def prod(s): return reduce(lambda x, y: x y, map(str2int, s)) print('3 5 7 9 =',prod('3579'))
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默_kk
from functools import reduce
d = {} for i in range(10): d[str(i)] = i
print(d)
def str2int(s): return d[s] def prod(s): return reduce(lambda x, y: x y, map(str2int, s)) print('3 5 7 9 =',prod('3579'))