I have a complicated string that includes a kilometer range and a fee for users that fall into that range. Ideally, I would like to transform the string into something that I could use to easily assign fees to users. I’ve taken the steps below to extract a list from the string, but the kilometer range is still not usable for classifying users:

import string
import unicodedata
import re
str = '{"row1":{"from":"0","to":"500","fee":"23100    "},"row2":{"from":"500","to":"1000","fee":"24100    "},"row3":{"from":"1000","to":"1500","fee":"25200    "},"row4":{"from":"1500","to":"2000","fee":"26200    "},"row5":{"from":"2000","to":"2500","fee":"27200    "},"row6":{"from":"2500","to":"3000","fee":"28300    "},"row7":{"from":"3000","to":"3500","fee":"29300    "},"row8":{"from":"3500","to":"4000","fee":"30400    "},"row9":{"from":"4000","to":"4500","fee":"31400    "},"row10":{"from":"4500","to":"5000","fee":"32400    "},"row11":{"from":"5000","to":"5500","fee":"33500    "},"row12":{"from":"5500","to":"6000","fee":"34600    "},"row13":{"from":"6000","to":"6500","fee":"35500  "},"row14":{"from":"6500","to":"7000","fee":"36600    "},"row15":{"from":"7000","to":"7500","fee":"37700    "},"row16":{"from":"7500","to":"8000","fee":"38600    "},"row17":{"from":"8000","to":"8500","fee":"39700    "},"row18":{"from":"8500","to":"9000","fee":"40300    "},"row19":{"from":"9000","to":"9500","fee":"41400    "},"row20":{"from":"9500","to":"10000","fee":"42700    "},"row21":{"from":"10000","to":"10500","fee":"43500    "},"row22":{"from":"10500","to":"11000","fee":"44500    "},"row23":{"from":"11000","to":"11500","fee":"45600    "},"row24":{"from":"11500","to":"12000","fee":"46600    "},"row25":{"from":"12000","to":"12500","fee":"47700    "},"row26":{"from":"12500","to":"13000","fee":"48700    "},"row27":{"from":"13000","to":"13500","fee":"49700    "},"row28":{"from":"13500","to":"14000","fee":"50800    "},"row29":{"from":"14000","to":"14500","fee":"51900    "},"row30":{"from":"14500","to":"15000","fee":"52800    "},"row31":{"from":"15000","to":"15500","fee":"52800    "},"row32":{"from":"15500","to":"16000","fee":"52800    "},"row33":{"from":"16000","to":"70000","fee":"52800    "'
str1 = unicodedata.normalize("NFKD", str)
str2 = str1.translate({ord(c): None for c in string.whitespace})
s1 = str2.replace('{', "")
s2 = s1.replace('"', ' ')
s3 = s2.split(sep='},')

for i in range(len(s3)):
    ftm = re.search(r'from : (d+) , to : (d+)', s3[i])
    fm = re.search(r'fee : (d+)', s3[i])
    if ftm and fm:
        vfrom = int(ftm.group(1))
        vto = int(ftm.group(2))
        vfee= int(fm.group(1))
        print(f"({vfrom}, {vto}), {vfee}")

I would like it to be instead transformed into something that extracts the lower and upper bounds of the range separately next to the fee, where I could later export into Excel and check which range the user falls between.