python3: reuse cmp_fn defined in compat.py
This will also fix PEP8 E306:
expected 1 blank line before a nested definition, found 0
Signed-off-by: Joe Guo joeg@catalyst.net.nz
This will also fix PEP8 E306:
expected 1 blank line before a nested definition, found 0
Signed-off-by: Joe Guo joeg@catalyst.net.nz