结果为runfile('C:/Users/Administrator/.spyder-py3/temp.py', wdir='C:/Users/Administrator/.spyder-py3')，输出不了结果是为啥呀？求解答，谢谢~

def return_values():
import pandas as pd
from sklearn.preprocessing import StandardScaler
from sklearn.cluster import KMeans
from sklearn.decomposition import PCA

#1.数据获取  
data = pd.read_excel('3.xlsx')  
X=data.iloc[:,1:] 

pca=PCA(n_components=0.90)  
pca.fit(X)  
f=pca.transform(X)  #主成分  
f=pd.DataFrame(f)  

标准化

scaler = StandardScaler()  
scaler.fit(f)   
XZ=scaler.transform(f)    
model = KMeans(n_clusters = 4, random_state=0, max_iter = 500) 
model.fit(XZ) #开始聚类  
c=model.labels_  
Fs=pd.Series(c,index=data['地区'])  
Fs=Fs.sort_values(ascending=True)  
return(Fs)