Filtering object sets in a Python function

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1

I have an object in my ontology (obj_foo) that i want to filter. I have an array all_ui and want to check if the object property foo_array contains any value in the array all_ui. then, i want to apply all_filters to obj_foo but the filter() method does not exist on the object.

here is my current approach:

  filter_condition = [obj_foo.foo_array.contains(ui) for ui in all_ui]

  all_filters = filter_condition[0]
  for condition in filter_condition[1:]:
      all_filters |= condition

  filtered_obj_set = obj_foo.filter(all_filters)

error:

AttributeError: type object 'obj_foo' has no attribute 'filter'.
2

Hi @meehirbhalla,

Here’s an alternative approach:

  1. Use a lambda function or custom logic to iterate through the obj_foo and filter based on your condition.

  2. Apply logical conditions programmatically since the filter() method is not available.

Initialization:
(I don’t have access to a similar object type right now)

# Example class definition for obj_foo
class FooObject:
    def __init__(self, name, foo_array):
        self.name = name
        self.foo_array = foo_array

    def __repr__(self):
        return f'FooObject(name={self.name}, foo_array={self.foo_array})'


# Initialize obj_foo instances
obj_foo1 = FooObject("Foo1", [1, 2, 3])
obj_foo2 = FooObject("Foo2", [4, 5, 6])
obj_foo3 = FooObject("Foo3", [7, 8, 9])

# List of all obj_foo instances (just for example)
obj_foo_list = [obj_foo1, obj_foo2, obj_foo3]

# Initialize the array of UI values we want to check against foo_array
all_ui = [2, 5, 10]

Revised code, for which I assumed you want any instance based on a single hit:

“[…] and want to check if the object property foo_array contains any value in the array all_ui”

# Filter the obj_foo instances based on the 
# condition that foo_array contains any value from all_ui
filtered_obj_set = []

for obj_foo in obj_foo_list:
    # Check if any element in all_ui is present in obj_foo.foo_array
    filter_condition = any(ui in obj_foo.foo_array for ui in all_ui)

    if filter_condition:
        # If condition is true, add obj_foo to filtered_obj_set
        filtered_obj_set.append(obj_foo)

# Output the filtered object set
print("Filtered Object Set:", filtered_obj_set)

This should print, Foo1 and Foo2 objects.

Hope this works,

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