objerve

A tiny observer for the attributes of Python objects.

Installation

objerve can be installed by running pip install objerve

Example Usage

Let's say you have a class like that;

class M:
    qux = "blue"

    def __init__(self):
        self.bar = 55
        self.foo = 89
        self.baz = 121

To watch the changes, you need the add the @watch() as a class decorator. Within the arguments of the watch decorator you should pass in lists for the keyword arguments of the attributes you wish to watch.

from objerve import watch

@watch(set={"foo", "qux"}, get={"bar", "foo"}, delete={"baz"})
class M:
    qux = "blue"

    def __init__(self):
        self.bar = 55
        self.foo = 89
        self.baz = 121


m = M()
m.bar = 233


def abc():
    m.foo += 10


m.qux = "red"


def get_foo(m):
    m.bar


abc()
m.foo
del m.baz
get_foo(m)

Output:

Set | foo = 89
  File "/home/blue/objerve/examples/example.py", line 9, in __init__
    self.foo = 89

Set | qux = red
  File "/home/blue/objerve/examples/example.py", line 21, in <module>
    m.qux = "red"

Get | foo
  File "/home/blue/objerve/examples/example.py", line 18, in abc
    m.foo += 10

Set | foo = 99
  File "/home/blue/objerve/examples/example.py", line 18, in abc
    m.foo += 10

Get | foo
  File "/home/blue/objerve/examples/example.py", line 29, in <module>
    m.foo

Delete | baz
  File "/home/blue/objerve/examples/example.py", line 30, in <module>
    del m.baz

Get | bar
  File "/home/blue/objerve/examples/example.py", line 25, in get_foo
    m.bar