def readcsvfile(csvfile):
with open(csvfile, "r", newline="") as file:
reader = csv.DictReader(file, dialect = "excel", fieldnames=("timestamp", "sensor_id", "sensor_name", "value"))
def readcsvfile(csvfile):
with open(csvfile, "r", newline="") as file:
reader = csv.DictReader(file, dialect = "excel", fieldnames=("timestamp", "sensor_id", "sensor_name", "value"))