python - How to access object attribute given string corresponding to name of that attribute

Question

How do you set/get the values of attributes of t given by x?

class Test:
   def __init__(self):
       self.attr1 = 1
       self.attr2 = 2

t = Test()
x = "attr1"

question from:https://stackoverflow.com/questions/65871678/pass-classs-method-as-function-argument

Answer 1

There are built-in functions called getattr and setattr

getattr(object, attrname)
setattr(object, attrname, value)

In this case

x = getattr(t, 'attr1')
setattr(t, 'attr1', 21)