[ https://issues.apache.org/jira/browse/ARROW-4434?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rok Mihevc updated ARROW-4434: ------------------------------ External issue URL: https://github.com/apache/arrow/issues/20993 > [Python] Cannot create empty StructArray via pa.StructArray.from_arrays > ----------------------------------------------------------------------- > > Key: ARROW-4434 > URL: https://issues.apache.org/jira/browse/ARROW-4434 > Project: Apache Arrow > Issue Type: Bug > Components: Python > Reporter: Krisztian Szucs > Assignee: Antoine Pitrou > Priority: Major > Labels: pull-request-available > Fix For: 0.13.0 > > Time Spent: 0.5h > Remaining Estimate: 0h > > {code:python} > In [5]: pa.StructArray.from_arrays([], names=[]) > --------------------------------------------------------------------------- > ValueError Traceback (most recent call last) > <ipython-input-5-d6fa9cf39f31> in <module> > ----> 1 pa.StructArray.from_arrays([], names=[]) > ~/Workspace/arrow/python/pyarrow/array.pxi in > pyarrow.lib.StructArray.from_arrays() > 1326 num_arrays = len(arrays) > 1327 if num_arrays == 0: > -> 1328 raise ValueError("arrays list is empty") > 1329 > 1330 length = len(arrays[0]) > ValueError: arrays list is empty > {code} > however > {code:python} > pa.array([], type=pa.struct([])) > {code} > works -- This message was sent by Atlassian Jira (v8.20.10#820010)