bradjasper / attrgettersetter

Flexible attribute getter and setter functions (useful for attribute.dot.syntax w/ default value support)

attrgettersetter

Python provides a great operator.attrgetter method, but it doesn't support default values and there's no similar attrsetter method.

This module provides those two convenience functions

Example

class A(object):
    def __init__(self):
        self.b = B()
        self.name = "A"

class B(object):
    def __init__(self):
        self.name = "B"

class C(object):
    pass


# getter 
name = attrgetter("name")
remote_name = attrgetter("b.name")
a = A()
b = B()
c = C()

self.assertEquals(name(a), "A")
self.assertEquals(name(b), "B")
self.assertEquals(remote_name(a), "B")
self.assertEquals(name(c), None)

# setter
name = attrsetter("name")
remote_name = attrsetter("b.name")


a = A()
a.b = B()

name(a, "A-1")
remote_name(a, "B-1")
self.assertEquals(a.name, "A-1")
self.assertEquals(a.b.name, "B-1")

License

MIT

Contact

@bradjasper