How to pass an object property reference to a functon

I want to return an object’s property value from a function but I don’t know how to pass the property reference to the function

class my_class:
    my_property = 0

c = my_class()
print (c.my_property)

def property_value(o, p):
    return o.p

my_property = 'my_property'
print (property_value(c, my_property))

0
Traceback (most recent call last):
  File "d:\teste.py", line 11, in <module>
    print (property_value(c, my_property))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "d:\teste.py", line 8, in property_value
    return o.p
           ^^^
AttributeError: 'my_class' object has no attribute 'p'

Tried to search but I can’t find the terms

>Solution :

You can use the builtin getattr() function for this

def property_value(o, p):
    return getattr(o, str(p))
    # NOTE: I'm using 'str(p)' here because the property name must be a string!

Then you’d call it just as before:

print(property_value(c, my_property))
# => 0

That said, there’s really no need to define a function like property_value here because getattr() already exists and does exactly the same thing!