How to add modules in Python?

Question

In Java, we have a main class who calls the classes and methods when needs. I'm trying to build a Python app with the same style: main file and few .py files with extra functionality.

I can import those files using

import <filename without .py>

What if I want to put all those files into a lib folder? I want to build a package for PyPI with my app.

I don't get your question. You can put files wherever you want. You can create folders (which is pretty much the same as package in Python) wherever you want. You then define setup.py file and you can gather all files into one package format (wheel or whatever). — freakish
– freakish, Commented Dec 1, 2016 at 12:27
Basic packaging tips from docs: docs.python.org/3/tutorial/modules.html#packages Is that what you look for? — Łukasz Rogalski
– Łukasz Rogalski, Commented Dec 1, 2016 at 12:30

metmirr · Accepted Answer · 2016-12-01 12:36:36Z

2

app/
  main.py
  lib/
    __init__.py
    foo.py
    bar.py

#main.py
from lib import foo
foo.SomeClass()

answered Dec 1, 2016 at 12:36

metmirr

4,3222 gold badges23 silver badges36 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Juanjo Salvador Over a year ago

I tried your solution few days ago, and it doesn't works... I tried it now, and it works. Python is magic. Thanks!

skistaddy · Accepted Answer · 2016-12-01 13:23:47Z

1

First, place a __init__.py in the directory the modules are in. Then - if your directory's name is lib - import your file like below from your main file.

import lib.foo
lib.foo.hello() # Calls the hello() function in the lib/foo.py file

answered Dec 1, 2016 at 13:23

skistaddy

2,2203 gold badges23 silver badges42 bronze badges

Comments

Community · Accepted Answer · 2020-06-20 09:12:55Z

0

Place all Python files into your lib directory then also add a file called __init__.py in that directory. This file is to be left empty.

Create a directory: mkdir lib
Create an empty file in this directory: touch __init__.py
Create the other modules you want to include in your package in this same directory
In your shell (e.g. bash) add lib to your $PYTHONPATH:

export PYTHONPATH="$PYTHONPATH:/path/to/lib"
import all modules in lib: Be sure to be one directory level above lib, then: >>> from lib import *

edited Jun 20, 2020 at 9:12

CommunityBot

11 silver badge

answered Dec 1, 2016 at 12:34

TMOTTM

3,4417 gold badges42 silver badges74 bronze badges

1 Comment

Bryan Oakley Over a year ago

your answer would be better if you included an example.

Collectives™ on Stack Overflow

How to add modules in Python?

3 Answers 3

1 Comment

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

1 Comment

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related