stress_at_work_analysis/features/light.py

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from collections.abc import Collection
import pandas as pd
2021-07-23 16:42:16 +02:00
from config.models import LightSensor, Participant
from setup import db_engine, session
def get_light_data(usernames: Collection) -> pd.DataFrame:
"""
Read the data from the light sensor table and return it in a dataframe.
Parameters
----------
usernames: Collection
A list of usernames to put into the WHERE condition.
Returns
-------
df_light: pd.DataFrame
A dataframe of light data.
"""
query_light = (
session.query(LightSensor, Participant.username)
.filter(Participant.id == LightSensor.participant_id)
.filter(Participant.username.in_(usernames))
)
with db_engine.connect() as connection:
df_light = pd.read_sql(query_light.statement, connection)
return df_light