Specifications

• Client Version: 1.36.0
• InfluxDB Version: 2.7

Code sample to reproduce problem

query_api.query_data_frame(query)

Expected behavior

The query should be executed without warnings.

Actual behavior

Pandas outputs a FutureWarning:

/usr/local/lib/python3.11/site-packages/influxdb_client/client/flux_csv_parser.py:256: FutureWarning:
The behavior of array concatenation with empty entries is deprecated. In a future version, this will no longer exclude empty items when determining the result dtype. To retain the old behavior, exclude the empty entries before the concat operation.

This is related to the this code snippet:

https://github.com/influxdata/influxdb-client-python/blob/aa6e5c4aad1aaf004195c175ebe424ac6040c2e3/influxdb_client/client/flux_csv_parser.py#L243C9-L256

Additional info

In the recent pandas version handling of concatenation of empty dataframes changed, see pandas-dev/pandas#39122. This should be handled else wise to reflect the changes in pandas.