CalplotShowFigureWithoutJupyter.py

import calplot
import numpy as np
import pandas as pd

all_days = pd.date_range('1/1/2019', periods=730, freq='D')
days = np.random.choice(all_days, 500)
events = pd.Series(np.random.randn(len(days)), index=days)
plot = calplot.calplot(events)

print(type(plot[0])) # reveals <class 'matplotlib.figure.Figure'>
print(type(plot[1])) # reveals <class 'numpy.ndarray'>

# So this should reveal the figure then, but it shows a white box that quickly closes
plot[0].show()

Found the solution shortly after posting my question.