python pvlib clear sky
import pvlib
from pvlib import clearsky, atmosphere, solarposition
from pvlib.location import Location
from pvlib.iotools import read_tmy3
import pandas as pd
import matplotlib.pyplot as plt
#Example to get clear sky model
tus = Location(32.2, -111, 'US/Arizona', 700, 'Tucson')
times = pd.date_range(start='2016-07-01', end='2016-07-04', freq='1min', tz=tus.tz)
cs = tus.get_clearsky(times) #returns dataframe