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Possible Duplicate:
Importing in Python

I have a couple of functions and I want to make them visible as library functions to be able to call them from other projects. I want to have them in a separate directory from common python libraries. How I should arrange my code?

Community
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user14416
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4 Answers4

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You can use this in project where you want import your functions:

import sys
sys.path.append('c:\\myprojects\\MyProjDir\\')

from MyModule import MyClass

Note, that file with name __init__.py must be placed in MyProjDir. Otherwise Python will not scan this directory. Contents of __init__.py can be left blank.

Docs:

  1. Modifying Python’s Search Path
  2. The Module Search Path
Gill Bates
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    Avoid manipulations of sys.path in your code. This makes it fragile, and not reusable on other systems. – Keith Dec 30 '12 at 23:49
  • I would appreciate if you explain more solid methods. (`virtualenv`?) – Gill Bates Dec 31 '12 at 01:32
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    Use setuptools (based on distutils). It will manage `.pth` files for you, by using commands such as `develop` to set up develop mode. You can then also deploy distributions from the same code base. – Keith Dec 31 '12 at 03:30
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First of all you have to make a package containing your code. A quick introduction can be found here: http://guide.python-distribute.org/introduction.html There are different options how to manage your package in relation to other projects. I would propose to use setuptools to create a distributable package. If you want to isolate your development from the default python installation, have a look at http://pypi.python.org/pypi/virtualenv.

Achim
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You must save this function in some my file, and from other file or module use import.

Mihai8
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Define these functions in a seperate file and use import to refer them. A helpful link (modules in python): http://docs.python.org/3/tutorial/modules.html

Huang Zhu
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