用途：

import glob

#create list of files
files = glob.glob('Sample_Data/*.csv')
#create list of DataFrames, join to one big DataFrame
df = pd.concat([pd.read_csv(f, header=None) for f in files], axis=1)
print (df)

#get means per same columns names
df1 = df.groupby(level=0, axis=1).mean()
print (df1)