CODEWITHSUNDEEP
pythonsyntaxnamespacespython-importidioms
SuperElectric
SuperElectric

Reputation: 18874

a concise way to import many modules with common namespace prefixes

I often find myself importing classes from modules that only differ in the last part of their namespace, e.g:

from a.b.c.d import Class1
from a.b.c.e import Class2
from a.b.c.f import Class3

Is there some way for me to type the common a.b.c. part just once?

I know that if they all had exactly the same namespace, i.e.

from a.b.c import Class1
from a.b.c import Class2
from a.b.c import Class3

Then I could just type

from a.b.c import (Class1, Class2, Class3)

So for my first example, I tried things like

from a.b.c import (d.Class1 as Class1, 
                   e.Class2 as Class2, 
                   f.Class3 as Class3)

... but that didn't work.

Any tips would be greatly appreciated.

Upvotes: 3

Views: 95

Answers (2)

bruno desthuilliers
bruno desthuilliers

Reputation: 77892

If a is one of your own packages (or if you willing and abale to maintain a fork...) you can use the a.b.c package as a facade:

# a/b/c/__init__.py
from d import Class1
from e import Class2
from f import Class3

Then:

# client code:
from a.b.c import Class1, Class2, Class3

will work.

Upvotes: 3

Martijn Pieters
Martijn Pieters

Reputation: 1121524

No, there is no syntax to import nested items as local names like that.

You could import the different modules, then assign to local names:

from a.b.c import d, e, f
Class1, Class2, Class3 = d.Class1, e.Class2, f.Class3
del d, e, f

but that's no more readable or concise.

Upvotes: 3

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