Get The List Of A Class's Variables & Methods In Python

If I have the following class, what's the best way of getting the exact list of variables and methods, excluding those from the superclass? class Foo(Bar): var1 = 3.14159265 va

Solution 1:

If the class and its superclasses are known, something like:

tuple(set(dir(Foo)) - set(dir(Bar)))

If you want it to be more generic, you can get a list of the base classes using something like

bases = Foo.mro()

...and then use that list to subtract out attributes from all the base classes.

Solution 2:

In your example, a is an instance, its __dict__ will include all variables set in its __init__ function. To get all class variables, use a.__class__.__dict__

Solution 3:

A third answer is the inspect module which does the same as above

Solution 4:

def getVariablesClass(inst):
var = []
cls = inst.__class__
for v in cls.__dict__:
    if not callable(getattr(cls, v)):
        var.append(v)

returnvar

if you want exclude inline variables check names on the __ at the start and the end of variable

Solution 5:

If you want to introspect your own classes, you can do it on class definition and cache it by the way:

classBar:
    parent_prop = 0classFoo(Bar):
    my_prop1 = 1
    my_prop2 = 2defmethod1(self):
        pass

    SYMBOLS = [k for k inlocals().keys() ifnot k.startswith('_')]



if __name__ == '__main__':
    print(Foo.SYMBOLS)

Output:

['my_prop1', 'my_prop2', 'method1']