Same parameters work from CLI, not from Python

[JasonDalton]

This command work perfectly:
eio clip -o TroutPass-30m-DEM.tif --bounds -78.92 38.95 -78.87 39.00

But the equivalent in Python (Anaconda, Python 3.7.7) returns no errors, but doesn't produce the saved file.
elevation.clip(bounds=(-78.92, 38.95, -78.87, 39.00), output='ExtractHeightField/Python-TroutPass-DEM.tif')