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Utility functions for reading and writing EXR image files as numpy arrays.
class range: range(stop) -> range object
class zip: zip(*iterables) --> zip object
channels_to_ndarray(...): Copies channels from an OpenEXR.InputFile into a numpy array.
read_exr(...): Opens an EXR file and copies the requested channels into an ndarray.
write_exr(...): Writes the values in a multi-channel ndarray into an EXR file.