How to include class from another file(in another folder) - python

Question

I have a python file in the location 'lib/lib_add_participant.py'.And I declared a class in the file.

Now I want to call the class functions from the file call_participant.py.

I tried this code from lib/lib_add_participant.py import LibAddParticipant

Its not worked.Please correct me(I am coming from Ruby).

score 4 · Accepted Answer · edited May 23 '17 at 12:26

4

If your file structure is as follows:

myproject/
    __init__.py
    call_participant.py
    lib/
        __init__.py
        lib_add_participant.py

In this case, your __init__.py files can be empty, if you like (or they can define any number of things - see this fine answer from Alex Martelli for more details.

then you can add it by using

from .lib.lib_add_participant import LibAddParticipant

However, if call_participant.py is your end script, then this tactic will not work, because you "can't do a relative import in a non-package", as the interpreter will tell you. In that case, your best bet (in my opinion, at least) is to make lib into a package in your python path (either in your site-packages directory, or in a path referred to by your pythonpath environment variable).

edited May 23 '17 at 12:26

Community

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answered Jul 20 '11 at 19:01

Nate

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A mistake: there should be `__init__.py` instead of `__init.py` – Jacek Konieczny Jul 20 '11 at 19:02
Oops! Good catch - tath's waht I get for tpynig too fsat. – Nate Jul 20 '11 at 19:05
I didn't created __init__.py file.Now please let me know what all are the contents inside it.I searched google and didn't get anything. – shajin Jul 20 '11 at 19:06

unutbu · Answer 2 · 2011-07-20T19:08:27.460

0

Assuming lib is in a directory listed in your PYTHONPATH, try

from lib.lib_add_participant import LibAddParticipant

edited Jul 20 '11 at 19:08

answered Jul 20 '11 at 19:00

unutbu

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If lib is listed in $PYTHONPATH it would be: `lib_add_participant import LibAddParticipant`. If lib is in one of directories listed in $PYTHONPATH then your code will work, but only if there is an `__init__.py` file there too. – Jacek Konieczny Jul 20 '11 at 19:03

How to include class from another file(in another folder) - python

2 Answers2