Does A而B且C mean "A and B and C"? In the following sentence:


  Rossum创造的Python语言自1991年发布以来已演变为程序员强大而灵活且易于学习的“瑞士军刀”


The meaning of 而且 is generally "but also", and used as the compound. But in this case, they are separated and used in the form of A而B且C.

In this case, does it mean "A and B and C", and thus the sentence mean the following?:


  The Python language, which was created by Rossum in 1991, since evolved for developers into "Swiss knife" that is powerful, flexible, and easy to learn.


At least it seems that 且 can mean "both A and B" with 既, in the form of 既A且B. But in this case it is in the form of A而B且C.

Or does the A而B且C mean something others?
"A而B且C" means A and B and C. We use "A而B且C" instead of "A且B且C" simply due to the reason that we do not want to use the same word twice in the phrase. 

"既","且"，“而” can all mean "and", while sometimes, the word "而" can means "but" (when "而" is used alone to link two sentences). One thing for sure is that in the form of "既A且B" and "A而B且C", they all mean "and".