[ARROW-10282] [Python] Conversion from custom types (eg decimal) to int dtype raises warning

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: Python
• External issue URL: https://github.com/apache/arrow/issues/18326
• Assignee: Unassigned
• Reporter: Joris Van den Bossche
• Created: 12/Oct/20 12:19
• Updated: 11/Jan/23 08:12

Description

In [2]: import decimal

In [3]: pa.array([decimal.Decimal("123456")], pa.int32())
DeprecationWarning: an integer is required (got type decimal.Decimal).  Implicit conversion to integers using __int__ is deprecated, and may be removed in a future version of Python.

Out[3]: 
<pyarrow.lib.Int32Array object at 0x7f4432032b80>
[
  123456,
]

cc kszucs