chapter1_07_basic_io.md

type
slides

Writing and Reading NWB Files

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Writing an NWB file

Writing and reading of NWB files is handled by the NWBHDF5IO class (read as NWB-HDF5-IO). To write an NWBFile object, create a new instance of NWBHDF5IO with the filename that you want to write to. You also have to specify that you want to write to the file using the 'w' argument (use 'r' to open the file for reading). Then, use the write method on your NWBFile object.

from pynwb import NWBHDF5IO

with NWBHDF5IO('example_file_path.nwb', 'w') as io:
    io.write(nwbfile)

That's it! All together, this code makes an NWB file called example_file_path.nwb containing a mouse's running speed for 1000 seconds as well as structured metadata associated with this experimental session.

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Let's practice!