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"""Pandas date utils."""
from influxdb_client.client.util.date_utils import DateHelper
from influxdb_client.extras import pd
class PandasDateTimeHelper(DateHelper):
"""DateHelper that use Pandas library with nanosecond precision."""
def parse_date(self, date_string: str):
"""Parse date string into `class 'pandas._libs.tslibs.timestamps.Timestamp`."""
return pd.to_datetime(date_string)
def to_nanoseconds(self, delta):
"""Get number of nanoseconds with nanos precision."""
return super().to_nanoseconds(delta) + (delta.nanoseconds if hasattr(delta, 'nanoseconds') else 0)
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