sortedStringList.py

import re
from collections import OrderedDict

def sortedStringList(array=[]):
    sortDict=OrderedDict()
    for splitList in array:
        sortDict.update({splitList:[int(x) for x in re.split("(\d+)",splitList)if bool(re.match("\d*",x).group())]})
    return [sortObjKey for sortObjKey,sortObjValue in sorted(sortDict.items(), key=lambda x:x[1])]

sortedStringList_print.py

getList=["test_20_geo","test_100_geo","test_001_geo","test_10_geo","test_011_geo","test_2_geo"]
print sortedStringList(getList)