Hi, 

You can import Odoo functions from self-made modules and from Odoo source directories. following are a few scenarios with examples.

Importing Odoo Functions in Custom Modules

1. Importing from Odoo source directories

from odoo import models, fields, api

from odoo.exceptions import ValidationError

2. Importing from your own custom modules

# Assuming you have a custom module named 'my_module' with a file 'helpers.py'

from . import helpers

from .models import my_model

3. Relative imports within your module

# In a file within your module, e.g., 'models/product.py'

from . import common

from ..helpers import utils

4. Importing specific functions or classes

from odoo.addons.base.models.res_partner import Partner

5. Using imported functions

class CustomModel(models.Model):

    _name = 'custom.model'

    @api.model

    def custom_method(self):

        #Using a function from Odoo core

        self.env['res.partner'].create({'name': 'New Partner'})

        #Using a function from your custom helper

        result = helpers.custom_calculation()

        #Using a model from another custom module

        my_model.do_something()

6. Importing and using external libraries

#Make sure the library is installed in your Odoo environment

import requests

def external_api_call(self):

    response = requests.get('https://api.example.com/data')

    # Process the response...

In your case, Try this way to import,

from odoo.addons.my_module1.your_python_file_name import my_method

Note: When importing external libraries, ensure they're listed in your module's external dependencies.

Thanks

Add all module to depends section in your manifest file

I believe most of us must have some functions which are  converged、common and to be used in some other modules. That's what modularity is all about. 

Example #1 :

we know the function 'float_compare()' in base module,  which comparing 2 floats' value.  It's just a function,  not belongs to any model . And it can be used everywhere you need by simply importing it :

Example #2 :

Even in business modules, there also have some shared functions defined in 'tools'  and to be imported in other places. 

In use: 

But similar mechanism does not work in custom modules. I defined a function to compute sequence,  and want to use it in business module (such as employee、partner、products、orders etc.) .  But importing raises error.

Of course I know there're 2 ways :

#1 、 Just repeating the code where I need it ;

#2、 Using "self.env['source_model'].get_sequence " to call it ;

But seems both above are not the reasonable solution,  efficiency or readability is not good. 

I just wondering if and how we can import such custom function from one custom module into another?

Hello noone,

If you are confused please share image what you do or you can connect with me i'll guide where you mistake.

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