In order to fill the void of unavailability of having a standard stream cipher, ECRYPT took an initiative in the form of a project called eSTREAM. A call for cipher submission was made all over the globe and Py (Roo) submitted by Eli Biham and Jennifer Seberry in 2005 was one of the candidates. Py was very efficient stream cipher that is 2.5 times faster than RC4, but was found prone to several cryptanalytic attacks. Though one improved version Pypy was submitted but unfortunately was not able to withstand the cryptanalytic results. In response to these claims the author of these ciphers withdrew Py, Py6 and Pypy stream cipher and given a new tweaked or modified version of these ciphers as TPy, TPy6, and TPypy. TPypy is most secure version of all these ciphers. Some claims have made against these ciphers and counterclaims by author of these algorithms were made to prove it secure. Our aim of this paper is to analyze various attacks and claims regarding this family of stream cipher and come to a conclusion for the security of these ciphers.