Commits
Joris Van den Bossche authored and Wes McKinney committed a566bc21bf7
ARROW-5169: [Python] preserve field nullability of specified schema in Table.from_pandas Author: Joris Van den Bossche <jorisvandenbossche@gmail.com> Closes #4397 from jorisvandenbossche/ARROW-5169-table-from-pandas-schema-nullability and squashes the following commits: f4b9c71b5 <Joris Van den Bossche> Merge remote-tracking branch 'upstream/master' into ARROW-5169-table-from-pandas-schema-nullability 4baef2a3c <Joris Van den Bossche> update return comment 496f731ae <Joris Van den Bossche> Merge remote-tracking branch 'upstream/master' into ARROW-5169-table-from-pandas-schema-nullability dbdac8cbc <Joris Van den Bossche> Merge remote-tracking branch 'upstream/master' into ARROW-5169-table-from-pandas-schema-nullability d693d4645 <Joris Van den Bossche> fix case of None as column name d5b322431 <Joris Van den Bossche> Merge remote-tracking branch 'upstream/master' into ARROW-5169-table-from-pandas-schema-nullability fc357a642 <Joris Van den Bossche> ARROW-5169: preserve field nullability of specified schema in Table.from_pandas