ISSUES WITH LOCUST

Hi everyone,

I am currently working on a project in Locust where I have to perform a simple GET/POST operation through a proxy. I have got the entire script ready.However im having some trouble getting it through a proxy. I have tried a number of traditional python methods such as 'export HTTP_PROXY" or urllib2.ProxyHandler' but it's been of no avail. 
I am attaching a segment of my code to show my current approach:
***********************************************************************************
class UserBehavior(TaskSet):

 def on_start(self):
  self.login()
  
  def login(self):

  proxy_support = urllib2.ProxyHandler({"https":"https://xxxxxxxxxxx"})
  opener = urllib2.build_opener(proxy_support)
  urllib2.install_opener(opener)
  urllib2.urlopen("https://yyyyyyyyyyyyyyyyyyy").read()
  self.client.post("/persistence/login", {"Username":"Ivan", "Password":"Ivan"})

@task(1)
def profile(self):
    self.client.get("/persistence/forum")
***********************************************************************
Please help me as to why am I not able to bypass it through a proxy and suggest any possible changes to my code.

Thanks.