Python - move files by name in certain dir

import os
from os import *
from os.path import *

months = {
    1 : "Januar",
    2 : "Februar",
    3 : "Maerz",
    4 : "April",
    5 : "Mai",
    6 : "Juni",
    7 : "Juli",
    8 : "August",
    9 : "September",
    10 : "Oktober",
    11 : "November",
    12 : "Dezember",
}

def main():
    list = os.listdir()
    for elem in list:
        if ".csv" in elem:
            #print(elem)
            d = getFileData(elem)
            moveFile(elem,d)

def getFileData(filename):
    data = []
    frags = filename.split("_")
    data.append(frags[1][0:4])
    data.append(frags[1][5:6])
    return data

def moveFile(filename, data):
    pathTarget = "./" + data[0] + "/" + data[1]
    if not isdir(pathTarget):
        makedirs(pathTarget)
    replace(filename,pathTarget + "/" + filename)

if __name__ == "__main__":
    main()