In the following sentence:
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?