pandas取出某两列

# 方法1
df = pd.DataFrame(df,columns=['body','predict'])

# 方法2
df = df[['predict', 'body']]

# 方法3
df = df.loc[:, ['predict', 'body']]

# 方法4
df = df.iloc[:, [1,3]]

# 方法5
df = pd.read_excel(filename, header=0, usecols=['predict','body'])