This is in reference to https://github.com/GoogleCloudPlatform/python-docs-samples/tree/master/iot/api-client/mqtt_example
(env) pi@kp-rpi:~/python-docs-samples/iot/api-client/mqtt_example $ sudo pip install -r requirements.txtDownloading/unpacking cryptography==2.1.3 (from -r requirements.txt (line 1))
Downloading cryptography-2.1.3.tar.gz (441kB): 441kB downloaded
Running setup.py (path:/tmp/pip-build-V8VXtv/cryptography/setup.py) egg_info for package cryptography
error in cryptography setup command: Invalid environment marker: python_version < '3'
Complete output from command python setup.py egg_info:
error in cryptography setup command: Invalid environment marker: python_version < '3'
Cleaning up...
Command python setup.py egg_info failed with error code 1 in /tmp/pip-build-V8VXtv/cryptography
Storing debug log for failure in /root/.pip/pip.log
This is in reference to https://github.com/GoogleCloudPlatform/python-docs-samples/tree/master/iot/api-client/mqtt_example
(env) pi@kp-rpi:~/python-docs-samples/iot/api-client/mqtt_example $ sudo pip install -r requirements.txtDownloading/unpacking cryptography==2.1.3 (from -r requirements.txt (line 1))
Downloading cryptography-2.1.3.tar.gz (441kB): 441kB downloaded
Running setup.py (path:/tmp/pip-build-V8VXtv/cryptography/setup.py) egg_info for package cryptography
error in cryptography setup command: Invalid environment marker: python_version < '3'
Complete output from command python setup.py egg_info:
error in cryptography setup command: Invalid environment marker: python_version < '3'
Cleaning up...
Command python setup.py egg_info failed with error code 1 in /tmp/pip-build-V8VXtv/cryptography
Storing debug log for failure in /root/.pip/pip.log