Python installation#
You can get started with Connext right away by installing the Python API.
Note that for add-on libraries, the code generator, infrastructure services, tools and utilities, you will need a full installation.
1. Install the Python API#
Install the python API as follows:
pip install rti.connext
2. Get a free evaluation license#
Get a free evaluation license file at https://www.rti.com/free-trial.
After filling out a brief form, you will receive an email with the license
file, rti_license.dat.
(You don’t need to download any additional installer at this point to continue using the Python API.)
Existing customers
If you have already purchased a Connext bundle, please follow the installation instructions here instead.
3. Run a Hello World#
We will run a simple Connext application to verify the installation in a directory of your choice.
Copy the rti_license.dat file to this directory, or set the environment
variable RTI_LICENSE_FILE to the path of the license file.
Create a file named hello_publisher.py with the following content:
from time import sleep
import rti.connextdds as dds
from rti.types.builtin import String
participant = dds.DomainParticipant(0)
topic = dds.Topic(participant, "Hello", String)
writer = dds.DataWriter(topic)
for i in range(100):
writer.write(String(f"Hello World #{i}"))
sleep(1)
Create a file named hello_subscriber.py with the following content:
import rti.connextdds as dds
import rti.asyncio
from rti.types.builtin import String
async def main():
participant = dds.DomainParticipant(0)
topic = dds.Topic(participant, "Hello", String)
reader = dds.DataReader(topic)
async for data in reader.take_data_async():
print(data)
rti.asyncio.run(main())
In one terminal, run the subscriber:
$ python hello_subscriber.py
In another terminal, run the publisher:
$ python hello_publisher.py
You should see the following output in the subscriber terminal:
String(value='Hello World #0')
String(value='Hello World #1')
...
Congratulations! You have successfully installed the Connext Python API.
Next steps#
Now you’re ready to build your own Connext distributed applications. You can complete many of the tutorials with just the Python API, but some require the full Connext installation.
