Import in python -

this question has answer here:

• relative imports in python 3 4 answers

i read lot of answers related question asking, still not understand how make possible thing trying. let's go point. report simplified version of application.

suppose have main folder called project , inside src main package containing three subpackages:

• clustering (containing file: clustering.py)
• parser (containing file: parser.py)
• support_class (containing file: myclass.py)

in each folder, except project one, there __init__.py

now, python scripts contained in clustering , parser package should use both myclass.py contained in support_class.

i tried relative imports, not works because run scripts contained in clustering , parser package directly , not want use -m option.

es. python parser.py [arguments]

example of relative import used is:

from ..supportclass import myclass 

i tried add package path sys.path not working because still tells me can't find module.

es.

sys.path.insert(0, "~/project/src")  support_class import myclass.py  

can suggest best way in python 2.7? if avoid sys.path option great because not solution much.

thanks in advance.

let's start project's folder architecture:

myproject/ └── src     ├── clustering     │   ├── __init__.py     │   └── clustering.py     ├── parser     │   ├── __init__.py     │   └── parser.py     ├── support_class     │   ├── __init__.py     │   └── support.py     └── main.py   

if i'm not mistaken, issue want import support.py within parser.py , clustering.py , being able run 2 independently if needed. 2 words you:

conditional imports

(and 1 more, after finding real other solution ;): pythonpath)

with assumption scripts have if __name__ == "__main__": section run tests, can have following imports:

clustering.py & parser.py:

if __name__ == "__main__":     import sys     import os      package_parent = '..'     script_dir = os.path.dirname(os.path.realpath(os.path.join(os.getcwd(), os.path.expanduser(__file__))))     sys.path.append(os.path.normpath(os.path.join(script_dir, package_parent)))      support_class.support import support else:     support_class.support  import support 

main.py:

from support_class.support  import support 

then, python clustering.py , python parser.py heart's content!

which makes duplicate of https://stackoverflow.com/a/16985066/3425488