Laurent Kadian created ARROW-12913:
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Summary: Non-nullable schema fields not checked in
Table.from_pydict
Key: ARROW-12913
URL: https://issues.apache.org/jira/browse/ARROW-12913
Project: Apache Arrow
Issue Type: Bug
Components: Python
Affects Versions: 4.0.1
Reporter: Laurent Kadian
This issue is similar to ARROW-2136.
If you provide a schema with nullable=False to Table.from_pydict and the data
you provide has nulls, no exception is raised and the table is constructed
successfully.
{noformat}
>>> import pyarrow as pa
>>> pydict = dict(a=[1.2, 2.1, None])
>>> schema = pa.schema([pa.field("a", pa.float64(), nullable=False)])
>>> table = pa.Table.from_pydict(pydict, schema=schema)
>>>
>>> table[0]
<pyarrow.lib.ChunkedArray object at 0x7f367f499ea0>
[
[
1.2,
2.1,
null
]
]
>>> table.schema
a: double not null
>>>
{noformat}
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