polars dataframe serializer missing field name escapes

[lemmi]

Seems like field names aren't escaped using the polars dataframe serializer. Here's a short reproducer with influxdb3-python 0.18.0:

import polars as pl

from influxdb_client_3.write_client.client.write_api import PointSettings
from influxdb_client_3.write_client.client.write.polars_dataframe_serializer import (
    PolarsDataframeSerializer,
)

df = pl.DataFrame(
    [
        pl.Series("with whitespace", [1], dtype=pl.Int64),
        pl.Series("time", [0], dtype=pl.Datetime(time_unit="ns")),
    ]
)

print(
    PolarsDataframeSerializer(
        df,
        PointSettings(),
        data_frame_measurement_name="measurement",
        data_frame_timestamp_column="time",
    ).serialize()[0]
)

Prints:

measurement with whitespace=1i 0

Expected

measurement with\ whitespace=1i 0

I think the relevant code should be here:

influxdb3-python/influxdb_client_3/write_client/client/write/polars_dataframe_serializer.py

Lines 94 to 104 in 42620f3

	fields = ",".join(
	f"{col}=\"{self.escape_value(row[self.column_indices[col]])}\"" if isinstance(row[self.column_indices[col]],
	str)
	else f"{col}={str(row[self.column_indices[col]]).lower()}" if isinstance(row[self.column_indices[col]],
	bool) # Check for bool first
	else f"{col}={row[self.column_indices[col]]}i" if isinstance(row[self.column_indices[col]], int)
	else f"{col}={row[self.column_indices[col]]}"
	for col in self.column_indices
	if col not in self.tag_columns + [self.timestamp_column] and
	row[self.column_indices[col]] is not None and row[self.column_indices[col]] != ""
	)