matplotlib で heatmap In [1]: import pandas as pd In [3]: import matplotlib.pyplot as plt In [4]: import numpy as np In [5]: df = pd.DataFrame(data=np.random.randn(10,10)) In [6]: df.head() Out[6]: 0 1 2 3 4 5 6 \ 0 -1.402152 1.153875 0.28…