If monkey patching is permitted in both Ruby and Python, why is it more controversial in Ruby?

Question

In many discussions I have heard about Ruby in which people have expressed their reservations about the language, the issue of monkey patching comes up as one of their primary c

Answer 1

Actually in Python it's a bit harder to modify basic types.

For example imagine, that you redefine integer.

Ruby:

class Fixnum 
   def *(n)
      5 
   end 
end

Now 2*2 yields 5.

Python:

>>> class int(int):
    def __mul__(self, x):
        return 5


>>> 2*2
4
>>> int(2)*int(2)
5