import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
%matplotlib inline
df = pd.read_csv('xxx.csv')
df = df.dropna()
df.head()
spearmancorr = df.corr(method = 'spearman')
spearmancorr
**
由于某种原因，我得到一个“ __”作为输出...它还说我有一个空的数据框（但df.head（））表明显然不是这种情况？