import pandas as pd
import matplotlib.pyplot as plt

data = [[78, 37,  8],
       [35, 40, 79],
       [73,  0, 88],
       [80, 51, 55],
       [78, 34, 10],
       [73, 45,  0],
       [73, 43, 49],
       [15, 32, 76],
       [27, 70, 13]]
df = pd.DataFrame(data)
df
plt.rcParams["figure.figsize"] = [12, 6]
plt.plot(df)
plt.show()
print(plt.rcParams["figure.figsize"])
plt.rcParams["figure.figsize"] = [12, 6]
plt.plot(df)
plt.show()