I have the following package structure (drastically simplified from a real use case):
mypackage/
├── __init__.py
├── mod1.py
│ ├── def func1(): return 1
│ └── ...
│
├── mod2.py
│ ├── def func2(): return 2
│ └── ...
└── mod3.py
with __init__.py like this
from .mod1 import *
from .mod2 import *
Now, in mod3.py I want to access the packages complete namespace with one alias like res = p.func1() + p.func2() and I want this to achieve this by one relative import statement. Is this possible?
I don't want an absolute import like import mypackage as p (because the code should be indifferent on renaming the package).
Note, this is related to but different from this unanswered question from 2009.
Generally you do not want to use asterisks while doing imports so you can use this while still using relative import:
from . import mod1
You can call the function like this:
mod1.func1()
PS: If you are using Python 3 you are no longer required to use __init__.py to define packages.
Edit: If you want use common namespace for all those functions you have imported you could create a new module to use as a header file:
mypackage/
├── header.py
│ ├── from .mod1 import *
│ └── from .mod2 import *
├── mod1.py
│ ├── def func1(): return 1
│ └── ...
│
├── mod2.py
│ ├── def func2(): return 2
│ └── ...
└── mod3.py
And in mod3.py you can import header.py and use the functions in various ways:
from .header import *
val1 = func1()
val2 = func2()
from . import header
val1 = header.func1()
val2 = header.func2()
from . import header as p
val1 = p.func1()
val2 = p.func2()