Accessing folder/file structure in python

Hi,

I have some csv files which are stored in a folder structure like this

Temp/stn1/Data2014.csv
Temp/stn1/Data2015.csv
Temp/stn2/Data2014.csv
Temp/stn2/Data2015.csv
Temp/stn3/Data2014.csv
Temp/stn3/Data2015.csv

I wanted to save them as stn1.csv, stn2.csv, stn3.csv

This is how I m trying but it's not saving files as desired.

dft = []
for root, dirs, files in os.walk("Temp/", topdown=False):
    for stn in dirs:
        for year in ['2014', '2015']:
            df = pd.read_csv("Temp/"+stn+"/Data"+year+".csv")
            dft.append(df)
      dft = pd.DataFrame(dft)
      filename = "stns/"+str(stn)+".csv"
      dft.to_csv(filename, index=False)

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Could you please let me know what I am missing here?