Can't use zarr.create to make v2 array with no compressor

[dstansby]

In zarr-python 2:

import zarr

arr = zarr.create(store={}, shape=(1), dtype='uint8', compressor=None)
print(arr.compressor)
# None

In zarr-python 3:

import zarr

arr = zarr.create(store={}, shape=(1), dtype='uint8', zarr_format=2, compressor=None)
print(arr.compressors)
# (Zstd(level=0),)

I was expecting the list of compressors to be empty, becuase by passing compressor=None I'm specifying explicitly to have no compressors.