Parquet 2.4+ and PyArrow 10.0.1 - Attempting to switch pyarrow column from string to datetime - parquet

Question

I attempted to follow the advice of Converting string timestamp to datetime using pyarrow , however my formatting seems to not be accepted by pyarrow
import pyarrow as pa
import pyarrow.parquet as pq
import pyarrow.compute as pc
table = pa.table({'n_legs': [2, 2, 4, 4, 5, 100],
'query_start_time': ["2022-12-30T19:02:40.466",
"2022-12-30T19:02:40.466",
"2022-12-30T19:02:40.466",
"2022-12-30T19:02:40.466",
"2022-12-30T19:02:40.466",
"2022-12-30T19:02:40.466"]})
pc.strptime(table.column("query_start_time"), format='%Y-%m-%dT%H:%M:%S.%f', unit='ms')
writer = pq.ParquetWriter('example.parquet', table.schema)
writer.write_table(table)
writer.close()
I've attempted removing the T , adding a Z at the end of the formatter and string.. seems instead I need to ..?
Traceback (most recent call last):
File "/home/emcp/Dev/temp_pyarrow/main.py", line 16, in <module>
pc.strptime(table.column("query_start_time"), format='%Y-%m-%d %H:%M:%S.%f', unit='ms')
File "/home/emcp/Dev/temp_pyarrow/venv/lib/python3.10/site-packages/pyarrow/compute.py", line 255, in wrapper
return func.call(args, options, memory_pool)
File "pyarrow/_compute.pyx", line 355, in pyarrow._compute.Function.call
File "pyarrow/error.pxi", line 144, in pyarrow.lib.pyarrow_internal_check_status
File "pyarrow/error.pxi", line 100, in pyarrow.lib.check_status
pyarrow.lib.ArrowInvalid: Failed to parse string: '2022-12-30T19:02:40.466' as a scalar of type timestamp[ms]
Do I need to manually convert the datetime value into an integer column and THEN change the column again?
EDIT: When I strip the .%f and change units to units='s' it seems to not error.. I am looking into that now