[Bug] Input node value containing "." is incorrectly treated as module.function

[Max-ChenFei]

Hi, when I use following code to run a workflow

from python_workflow_definition.pyiron_base import load_workflow_json
delayed_object_lst = load_workflow_json(file_name='workflow.json')
delayed_object_lst[-1].pull()

For example, the workflow file may contain nodes like this:

[
  {"id": 0, "type": "function", "value": "workflow.preprocess"},
  {"id": 1, "type": "input", "value": "image.png", "name": "input_image"}
]

The value of the nodes are splited by ".", and treat first element as the module

python-workflow-definition/src/python_workflow_definition/pyiron_base.py

Lines 244 to 248 in 4538453

	if isinstance(v, str) and "." in v:
	p, m = v.rsplit(".", 1)
	if p == "python_workflow_definition.shared":
	p = "python_workflow_definition.pyiron_base"
	mod = import_module(p)

but for input nodes, the value can be a file name, such as "image.png". Because "image.png" contains ., it is interpreted as a Python module path. As a result, the code tries to import image, which raises an error at

python-workflow-definition/src/python_workflow_definition/pyiron_base.py

Line 248 in 4538453

mod = import_module(p)

[jan-janssen]

@Max-ChenFei Thanks for the feedback, I created a pull request with a bug fix, can you check if this resolves your issue?
#177

[Max-ChenFei]

@jan-janssen Thanks for your help. The issue has been resolved.