def test_set_workers_invalid():
with pytest.raises(ValueError, match='workers must not be zero'):
with fft.set_workers(0):
pass
with pytest.raises(ValueError, match='workers value out of range'):
with fft.set_workers(-os.cpu_count() - 1):
pass
def test_set_get_workers():
cpus = os.cpu_count()
assert fft.get_workers() == 1
with fft.set_workers(4):
assert fft.get_workers() == 4
with fft.set_workers(-1):
assert fft.get_workers() == cpus
assert fft.get_workers() == 4
assert fft.get_workers() == 1
with fft.set_workers(-cpus):
assert fft.get_workers() == 1
def run_python(self, output, fit_size=3):
import time
import multiprocessing
nthreads = multiprocessing.cpu_count()
with fft.set_workers(nthreads):
started = time.time()
self.get_ref()
if output.endswith(".txt"):
with open(output, "w") as fh:
for x, y, fname in self:
print(".", end="", flush=True)
fh.write("{:.6f} {:.6f} {} {}\n".format(
x, y, len(self.roi.positions), fname))
for (j, i), (cor, xp, yp, q) in zip(
self.roi.positions,
self.get_cor(fname, fit_size=fit_size)):
fh.write(
"{} {} {:.6f} {:.6f} {:.6f} {:.6f} {:.6f} {:.6f} {:.6f} {:.6f}\n"
.format(j, i, xp, yp, *q))
else:
with open(output, "wb") as fh:
for x, y, fname in self:
print(".", end="", flush=True)
data = np.asarray(
[(j, i, xp, yp, *q)
for (j, i), (cor, xp, yp, q) in zip(
self.roi.positions,
self.get_cor(fname, fit_size=fit_size))],
dtype=float)
data.tofile(fh)
dur = time.time() - started
print()
print(time.time() - started)
return dur