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Fix warning message for num_threads in pvlib.spa #2170

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Fix warning message for num_threads in pvlib.spa #2170

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5a3ad1e
fix spa numthreads warning interpolation
kandersolar Aug 17, 2024
b954ac8
add test
kandersolar Aug 17, 2024
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2 changes: 1 addition & 1 deletion pvlib/spa.py
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Original file line number Diff line number Diff line change
Expand Up @@ -938,7 +938,7 @@ def solar_position_numba(unixtime, lat, lon, elev, pressure, temp, delta_t,

if ulength < numthreads:
warnings.warn('The number of threads is more than the length of '
'the time array. Only using %s threads.'.format(ulength))
f'the time array. Only using {ulength} threads.')
numthreads = ulength

if numthreads <= 1:
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6 changes: 6 additions & 0 deletions pvlib/tests/test_spa.py
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Expand Up @@ -423,3 +423,9 @@ def test_solar_position_multithreaded(self):
nresult, self.spa.solar_position(
times, lat, lon, elev, pressure, temp, delta_t,
atmos_refract, numthreads=3, sst=True)[:3], 5)

def test_solar_position_warn_too_many_threads(self):
two_timestamps = np.array([unixtimes[0], unixtimes[0]])
with self.assertWarnsRegex(UserWarning, '.*Only using 2 threads.'):
self.spa.solar_position(two_timestamps, lat, lon, elev, pressure,
temp, delta_t, atmos_refract, numthreads=3)
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