Python题 返回最长数字子串，求解
import re
s = "23jl2k3j42352958230jerjlskfjd039wek3klsj309"
l = re.findall(r'(\d*)', s)
res = sorted(l, key=lambda x: (x.isdigit(), len(x)),reverse=True )
print(res[0])
import re
s = "23jl2k3j42352958230jerjlskfjd039wek3klsj309"
l = re.findall(r'(\d*)', s)
res = sorted(l, key=lambda x: (x.isdigit(), len(x)),reverse=True )
print(res[0])