Default to int64 in Python3, add long
and unicode
to schema and type inference
#821
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This PR changes our inference check to infer int32s in python 2 and int64 in python 3. Additionally, it allows
long
andunicode
to be used in schemas;long
maps to int64, andunicode
maps to string.Actual storage semantics of the values are not changed, so the limit for numeric types remains at 64 bits. Passing in a value that overflows int64 is undefined behavior.
Additionally wraps the call to
iter
to generate more meaningful errors when assessing the type of a dataset.