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Query responses
Brendan Whitfield edited this page May 5, 2015
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The query() function returns Response objects. These objects have the following properties:
| Property | Description |
|---|---|
| value | The decoded value from the car |
| unit | The units of the decoded value |
| command | The OBDCommand object that triggered this response |
| message | The internal Message object containing the raw response from the car |
| time | Timestamp of response (as given by time.time()) |
The value property typically contains numeric values, but can also hold complex structures (depending upon the command being decoded).
If python-OBD is unable to retrieve a response from the car, an empty Response object will be returned. Use is_null() to check for empty responses.
Unit values can be found in the Unit class (enum).
from obd.utils import Unit| Name | Value |
|---|---|
| NONE | None |
| RATIO | "Ratio" |
| COUNT | "Count" |
| PERCENT | "%" |
| RPM | "RPM" |
| VOLT | "Volt" |
| F | "F" |
| C | "C" |
| SEC | "Second" |
| MIN | "Minute" |
| PA | "Pa" |
| KPA | "kPa" |
| PSI | "psi" |
| KPH | "kph" |
| MPH | "mph" |
| DEGREES | "Degrees" |
| GPS | "Grams per Second" |
| MA | "mA" |
| KM | "km" |
| LPH | "Liters per Hour" |