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import h5py
from .base import write_base_index, write_metadata
def write_file(filename, devices, ntrains, firsttrain=10000, chunksize=200,
format_version='0.5'):
f = h5py.File(filename, 'w')
f.create_group('RUN') # Add this, even if it's left empty
write_base_index(f, ntrains, first=firsttrain, chunksize=chunksize,
format_version=format_version)
data_sources = []
for dev in devices:
dev.ntrains = ntrains
dev.firsttrain = firsttrain
dev.chunksize = chunksize
dev.write_control(f)
dev.write_instrument(f)
data_sources.extend(dev.datasource_ids())
write_metadata(f, data_sources, chunksize=chunksize,
format_version=format_version)
f.close()
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