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This topic shows how to quickly install a DroneKit-Python development environment and run a simple example to get vehicle attributes from a simulated Copter.
DroneKit-Python and the dronekit-sitl simulator are installed from pip on all platforms.
On Linux you will first need to install pip and python-dev:
sudo apt-get install python-pip python-devpip is then used to install dronekit and dronekit-sitl. Mac and Linux may require you to prefix these commands with sudo:
pip install dronekit
pip install dronekit-sitlSee :doc:`../develop/installation` and dronekit-sitl for more detailed installation instructions.
The script below first launches the simulator. It then imports and calls the :py:func:`connect() <dronekit.connect>` method, specifying the simulator's connection string (tcp:127.0.0.1:5760). The method returns a :py:class:`Vehicle <dronekit.Vehicle>` object that we then use to query the attributes.
print "Start simulator (SITL)"
import dronekit_sitl
sitl = dronekit_sitl.start_default()
connection_string = sitl.connection_string()
# Import DroneKit-Python
from dronekit import connect, VehicleMode
# Connect to the Vehicle.
print("Connecting to vehicle on: %s" % (connection_string,))
vehicle = connect(connection_string, wait_ready=True)
# Get some vehicle attributes (state)
print "Get some vehicle attribute values:"
print " GPS: %s" % vehicle.gps_0
print " Battery: %s" % vehicle.battery
print " Last Heartbeat: %s" % vehicle.last_heartbeat
print " Is Armable?: %s" % vehicle.is_armable
print " System status: %s" % vehicle.system_status.state
print " Mode: %s" % vehicle.mode.name # settable
# Close vehicle object before exiting script
vehicle.close()
# Shut down simulator
sitl.stop()
print("Completed")Copy the text above into a new text file (hello.py) and run it in the same way as you would any other standalone Python script.
python hello.pyYou should see the following output from the simulated vehicle:
Start simulator (SITL)
Downloading SITL from http://dronekit-assets.s3.amazonaws.com/sitl/copter/sitl-win-copter-3.3.tar.gz
Extracted.
Connecting to vehicle on: 'tcp:127.0.0.1:5760'
>>> APM:Copter V3.3 (d6053245)
>>> Frame: QUAD
>>> Calibrating barometer
>>> Initialising APM...
>>> barometer calibration complete
>>> GROUND START
Get some vehicle attribute values:
GPS: GPSInfo:fix=3,num_sat=10
Battery: Battery:voltage=12.587,current=0.0,level=100
Last Heartbeat: 0.713999986649
Is Armable?: False
System status: STANDBY
Mode: STABILIZE
CompletedThat's it- you've run your first DroneKit-Python script.
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