[ARROW-1751] [Python] Pandas 0.21.0 introduces a breaking API change for MultiIndex construction

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.7.1
• Fix Version/s: 0.8.0
• Component/s: Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/17754
• Assignee: Phillip Cloud
• Reporter: Phillip Cloud
• Created: 29/Oct/17 20:15
• Updated: 11/Jan/23 07:16
• Resolved: 30/Oct/17 00:33

Description

Pandas 0.21.0:

In [10]: pd.__version__
Out[10]: '0.21.0'

In [11]: pd.MultiIndex.from_tuples([('a',), ('b',)])
Out[11]:
MultiIndex(levels=[['a', 'b']],
           labels=[[0, 1]])

Pandas 0.20.3

In [2]: pd.__version__
Out[2]: '0.20.3'

In [3]: pd.MultiIndex.from_tuples([('a',), ('b',)])
Out[3]: Index(['a', 'b'], dtype='object')

Issue Links

• links to: GitHub Pull Request #1268