Getting {“errors”:[{“message”:“Bad Authentication data”,“code”:215}]} using python-twitter API v1.0 #252

Twitter API v1.0 has been put to halt and only v1.1 is working. python-twitter 
v1.0 says that it works with Twitter API v1.1. On running the attached code, I 
am not able to retrieve any data. On opening one of the URLs, I get this error:

{“errors”:[{“message”:“Bad Authentication data”,“code”:215}]}