opencog-atomspace / examples / python / ground / ground.py

#! /usr/bin/env python3
#
# ground.py
#
"""
Demo of calling python from Atomese.
Both regular function calls, and class instance method calls are demoed.
"""

import sys
from opencog.atomspace import types
from opencog.atomspace import *

import mymodule as mm

def local_func(x1, x2, x3):
    print("Entering local function with\n", x1, x2, x3)
    return x3

class LocalClass:
    @staticmethod
    def static_check(x1):
        print("Entering static method with\n", x1)
        return x1
    def forward(self, x1, x2):
        print("Entering LocalClass with\n", x1, x2)
        return x1

nn = LocalClass()

# local function
exlof = ExecutionOutput(
    GroundedSchema("py:local_func"),
    ListLink(Concept("aa"), Concept("bb"), Concept("cc")))

assert exlof.execute() == Concept("cc"), "Failed while calling local function"

# local object
exloc = ExecutionOutput(
    GroundedSchema("py:nn.forward"),
    List(Concept("aa"), Concept("bb")))

assert exloc.execute() == Concept("aa"), "Failed while calling local object method"

# static method
exst = ExecutionOutput(
    GroundedSchema("py:LocalClass.static_check"),
    ListLink(Concept("aa")))

assert exst.execute() == Concept("aa"), "Failed while calling static class method"

# external function
exexf = ExecutionOutput(
    GroundedSchema("py:mm.mod_func"),
    ListLink(Concept("aa"), Concept("bb"), Concept("cc")))

assert exexf.execute() == Concept("aa"), "Failed while calling external function"

# object in external module
exext = ExecutionOutputLink(
    GroundedSchemaNode("py:mm.nn.submodule.forward"),
    ListLink(ConceptNode("aa"), ConceptNode("bb")))

assert exext.execute() == Concept("bb"), "Failed while calling external object method"


'''
# also, here is an example of how to make a generic wrapper to call object methods
class LocalClass:
    def forward(self, listArgs):
        print("entering forward with args:")
        print(listArgs)
        return listArgs.out[0]

def callObjMethod(conceptObject, conceptFunction, listArgs):
    o = getattr(sys.modules[__name__], conceptObject.name)
    return getattr(o, conceptFunction.name)(listArgs)

ex = ExecutionOutput(
   GroundedSchemaNode("py:callObjMethod"),
   List(Concept("nn"),
            List(Concept("bb"))))
'''