Earlier quoted context omitted.
Only one of the items in your "such as" list is unique to python's philosophy, and that is "there should be one way to do it". Ruby embraces the many ways to accomplish something, it's true. However, the three others are not unique to python. Ruby especially embraces "readability counts". And I can't think of anything in the ruby language itself that is implicit over explicit. Perhaps you are thinking of rails and co…
Ruby has implicit return values for methods, but unless I'm wrong, so does Python.
Neither (except maybe the None case in Python) is really implicit, Ruby is just an expression oriented language while Python is statement-oriented.
OTOH, in Ruby the keyword “return” is superfluous except for altering control flow for an early return, while in Python it is the mechanism for supplying a return value.