问如何在pearson相关热图上指定数据？

EN

sb.heatmap(df['POPDEN', 'RoadsArea', 'MedianIncome', 'MedianPrice', 'PropertyCount', 'AvPTAI2015', 'PTAL'].corr(), annot=True, fmt='.2f')

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-54-832fc3c86e3e> in <module>
----> 1 sb.heatmap(df['POPDEN', 'RoadsArea', 'MedianIncome', 'MedianPrice', 'PropertyCount', 'AvPTAI2015', 'PTAL'].corr(), annot=True, fmt='.2f')

TypeError: list indices must be integers or slices, not tuple

df.cov().round(3)
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-79-34a86e96b161> in <module>
----> 1 df.cov().round(3)

TypeError: cov() missing 1 required positional argument: 'self'