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import warnings
import pytest
from ase.build import bulk, molecule, fcc111
from ase.io.animation import write_animation
def test_animate(plt):
from matplotlib.animation import writers
if 'html' not in writers.list():
pytest.skip('matplotlib html writer not present')
images = [molecule('H2O'), bulk('Cu'), fcc111('Au', size=(1, 1, 1))]
# gif and mp4 writers may not be available. Easiest solution is to only
# test this using the html writer because it always exists whenever
# matplotlib exists:
with warnings.catch_warnings():
try:
from matplotlib import MatplotlibDeprecationWarning
except ImportError:
pass
else:
warnings.simplefilter('ignore', MatplotlibDeprecationWarning)
write_animation('things.html', images, writer='html')
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