[Solved] Given this Python code on Raspberry Pi using InfluxDB client: data = [{"measurement": "humidity", "tags": {"room": "bedroom"}, "fields": {"value": 45}}] client.write_points(data) result = client.... | Raspberry Pi

Raspberry Pi - Data Logging and Databases

Given this Python code on Raspberry Pi using InfluxDB client:

data = [{"measurement": "humidity", "tags": {"room": "bedroom"}, "fields": {"value": 45}}]
client.write_points(data)
result = client.query('SELECT * FROM humidity WHERE room = \'bedroom\'')
print(list(result.get_points()))

What will be the output?

ASyntaxError

B[]

C[{'time': '...', 'room': 'bedroom', 'value': 45}]

DNone

Step-by-Step Solution

Solution:

Step 1: Understand data insertion
The code writes one data point with measurement 'humidity', tag 'room'='bedroom', and field 'value'=45. This data is stored in InfluxDB.
Step 2: Query and print results
The query selects all points from 'humidity' where 'room'='bedroom'. Since the data was just inserted, the query returns that point. Printing the list of points shows a list with one dictionary containing time, room, and value keys.
Final Answer:
[{'time': '...', 'room': 'bedroom', 'value': 45}] -> Option C
Quick Check:
Inserted data queried returns list with one point [OK]

Quick Trick: Inserted points appear in query results as dicts [OK]

Common Mistakes:

MISTAKES

Expecting empty list if data was inserted
Confusing syntax error with query result
Assuming None is returned from query

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More Raspberry Pi Quizzes

Given this Python code on Raspberry Pi using InfluxDB client:

Step 1: Understand data insertion

Step 2: Query and print results

Final Answer:

Quick Check:

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