diff --git a/Analyser/FFTAnalyser.py b/Analyser/FFTAnalyser.py
index f70243f..79e1565 100644
--- a/Analyser/FFTAnalyser.py
+++ b/Analyser/FFTAnalyser.py
@@ -1,5 +1,4 @@
 import xarray as xr
-import pandas as pd
 import numpy as np
 
 from datetime import datetime
@@ -11,9 +10,11 @@ import finufft
 def fft(dataArray, **kwargs):
     return xrft.fft(dataArray, **kwargs)
 
+
 def ifft(dataArray, **kwargs):
     return xrft.ifft(dataArray, **kwargs)
 
+
 def fft_nutou(dataArray, modeNum, **kwargs):
     
     data = dataArray.to_numpy()
@@ -45,6 +46,7 @@ def fft_nutou(dataArray, modeNum, **kwargs):
 
     return res
 
+
 def ifft_nutou(dataArray, modeNum):
     pass
         
\ No newline at end of file