python run method from name

method_from_name.py

import base64
import json
import sys

demo_obj = {
    'module_name': "spock_spore_engine.tasks.demo_task",
    'class_name': "DemoTask",
    'class_args': [],
    'class_kwargs': {

    },
    'method_name': 'run',
    'method_args': [],
    'method_kwargs': {
        'a': 1,
        'b': '零',
        'c': 2.4
    }
}

# demo_obj = {
#     'module_name': "array",
#     'class_name': "ArrayType",
#     'class_args': ['b'],
#     'class_kwargs': {
#
#     },
#     'method_name': 'count',
#     'method_args': ['b'],
#     'method_kwargs': {
#     }
# }

demo_str = json.dumps(demo_obj)

if __name__ == '__main__':
    print(demo_str)
    print(base64.b64encode(demo_str.encode()).decode())
    b64_json = sys.argv[1]
    print("the_json", b64_json)
    wrapper_args = json.loads(base64.b64decode(b64_json))
    # wrapper_args = json.loads(demo_str)
    module_name = wrapper_args['module_name']
    class_name = wrapper_args['class_name']
    class_kwargs = wrapper_args['class_kwargs']
    class_args = wrapper_args['class_args']
    method_name = wrapper_args['method_name']
    kwargs = wrapper_args['method_kwargs']
    args = wrapper_args['method_args']
    import importlib

    the_module = importlib.import_module(module_name)
    the_class = getattr(the_module, class_name)
    instance = the_class(*class_args, **class_kwargs)
    method_instance = getattr(instance, method_name)
    method_instance(*args, **kwargs)