How can I display an np.array with pylab.imshow() using Matplotlib?

To display an np.array with imshow(), we can take the following steps

Set the figure size and adjust the padding between and around the subplots.
Make a 2D data raster using an np.array.
Display the data as an image, i.e., on a 2D regular raster.
To display the figure, use show() method.

Example

import numpy as np
from matplotlib import pyplot as plt
plt.rcParams["figure.figsize"] = [7.50, 3.50]
plt.rcParams["figure.autolayout"] = True
data = np.array(
[[0.1, 0.7, 0.6, 0.3],
[0.2, 0.6, 0.5, 0.2],
[0.8, 0.3, 0.80, 0.01],
[0.3, 0.4, 0.2, 0.1]]
)
plt.imshow(data, interpolation="nearest", cmap="RdYlGn_r")
plt.show()