python - Evaluate string to an object and changing / assigning value -

is there way of writing piece of code other using exec evaluate code? there i'm missing manual?

class object():      def __init__(self):         self.a = 200         self.y = 400  list = [ 'o.x', 'o.y', 'o.z' ]  o = object()  item in list:     exec(item + ' = 1000') 

what wanted in dream this:

for item in list:     item = 1000 

but obvious reasons 'exec' went since no evaluation ever take place.

use setattr() set value of instance attribute string:

>>> class a(): ...     def __init__(self): ...         self.a = 200 ...         self.y = 400 ...  >>> = a() >>> l = ['x', 'y', 'z'] >>> item in l: ...     setattr(a, item, 1000) ...  >>> a.x 1000 >>> a.y 1000 >>> a.z 1000