[Jython-bugs] [issue2722] run-time issue while trying to reach external endpoint (Weather API) via Java/Jython

[Vaishnavi <re...@bu...>]

New submission from Vaishnavi <rav...@gm...>:

This is my code:

import java.util.Properties;
import org.python.util.PythonInterpreter;

public class GenerateWeather {

	@SuppressWarnings("resource")
	public static void main(final String[] args) throws ScriptException {
		System.setProperty("python.cachedir.skip", "true");
		Properties p = new Properties();
		p.setProperty("python.path",
				"/Users/<user>/.m2/repository/org/python/jython-standalone/2.7.1/jython-standalone-2.7.1.jar");
		p.setProperty("python.home",
				"/Users/<user>/.m2/repository/org/python/jython-standalone/2.7.1/jython-standalone-2.7.1.jar");
		p.setProperty("python.prefix",
				"/Users/<user>/.m2/repository/org/python/jython-standalone/2.7.1/jython-standalone-2.7.1.jar");
		PythonInterpreter.initialize(System.getProperties(), p, new String[] {});

		PythonInterpreter interpreter = new PythonInterpreter();

		interpreter.exec("import sys");
		interpreter.exec("sys.path.append(\"/usr/local/lib/python2.7/site-packages\")");
		interpreter.execfile("/Users/<user>/GenerateWeatherReport/python/current_and_forecast.py");
	}
}

*******
current_and_forecast.py works great when invoked in stand-alone mode "python current_and_forecast.py" however fails with Jython with the following stack-trace:


Exception in thread "MainThread" Traceback (most recent call last):
  File "/Users/<user>/GenerateWeatherReport/python/current_and_forecast.py", line 64, in <module>
    current_weather()
  File "/Users/<user>/GenerateWeatherReport/python/current_and_forecast.py", line 21, in current_weather
    cw = requests.get('http://api.openweathermap.org/data/2.5/weather?q=' + city + ',' + country + '&appid=' + api_key)
  File "/usr/local/lib/python2.7/site-packages/requests/api.py", line 75, in get
    return request('get', url, params=params, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/requests/api.py", line 60, in request
    return session.request(method=method, url=url, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/requests/sessions.py", line 524, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/lib/python2.7/site-packages/requests/sessions.py", line 637, in send
    r = adapter.send(request, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/requests/adapters.py", line 439, in send
    resp = conn.urlopen(
  File "/usr/local/lib/python2.7/site-packages/requests/adapters.py", line 439, in send
    resp = conn.urlopen(
  File "/usr/local/lib/python2.7/site-packages/urllib3/connectionpool.py", line 597, in urlopen
    httplib_response = self._make_request(conn, method, url,
  File "/usr/local/lib/python2.7/site-packages/urllib3/connectionpool.py", line 597, in urlopen
    httplib_response = self._make_request(conn, method, url,
  File "/usr/local/lib/python2.7/site-packages/urllib3/connectionpool.py", line 354, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/Users/<user>/.m2/repository/org/python/jython-standalone/2.7.1/jython-standalone-2.7.1.jar/Lib/httplib.py", line 1042, in request
  File "/Users/<user>/.m2/repository/org/python/jython-standalone/2.7.1/jython-standalone-2.7.1.jar/Lib/httplib.py", line 1082, in _send_request
  File "/Users/<user>/.m2/repository/org/python/jython-standalone/2.7.1/jython-standalone-2.7.1.jar/Lib/httplib.py", line 1038, in endheaders
  File "/Users/<user>/.m2/repository/org/python/jython-standalone/2.7.1/jython-standalone-2.7.1.jar/Lib/httplib.py", line 882, in _send_output
  File "/Users/<user>/.m2/repository/org/python/jython-standalone/2.7.1/jython-standalone-2.7.1.jar/Lib/httplib.py", line 858, in send
  File "/Users/<user>/.m2/repository/org/python/jython-standalone/2.7.1/jython-standalone-2.7.1.jar/Lib/_socket.py", line 1441, in meth
  File "/Users/<user>/.m2/repository/org/python/jython-standalone/2.7.1/jython-standalone-2.7.1.jar/Lib/_socket.py", line 382, in handle_exception
  File "/Users/<user>/.m2/repository/org/python/jython-standalone/2.7.1/jython-standalone-2.7.1.jar/Lib/_socket.py", line 382, in handle_exception
  File "/Users/<user>/.m2/repository/org/python/jython-standalone/2.7.1/jython-standalone-2.7.1.jar/Lib/_socket.py", line 382, in handle_exception
  File "/Users/<user>/.m2/repository/org/python/jython-standalone/2.7.1/jython-standalone-2.7.1.jar/Lib/_socket.py", line 1193, in send
AttributeError: 'org.python.netty.channel.socket.nio.NioSocketChann' object has no attribute 'bytesBeforeUnwritable'

*********
when checked with Weather API or urllib3, the suggestions were to reach out to Jython because of some native issue with sockets.

Pls can you help me out here. Thanks.

----------
components: Core
messages: 12212
nosy: vaishnavihravi
severity: normal
status: open
title: run-time issue while trying to reach external endpoint (Weather API) via Java/Jython
versions: Jython 2.7

_______________________________________
Jython tracker <re...@bu...>
<http://bugs.jython.org/issue2722>
_______________________________________