Python: How to import part of a namespace

Question

I have a structure such this works :

import a.b.c a.b.c.foo()

and this also works :

from a.b import c c.foo()

but this doesn't work :

from a import b.c b.c.foo()

nor does :

from a import b b.c.foo()

How can I do the import so that b.c.foo() works?

Is there a particular reason why you need the b.c.foo() syntax instead of c.foo() for your code? — Amber
– Amber, Commented Aug 4, 2009 at 2:37
yes, the prefix is really long with lots of nested modules, but importing 'c' is a namespace collision. — Paul Tarjan
– Paul Tarjan, Commented Aug 4, 2009 at 2:40
ok, adding to that, assume that it is more semantically correct to write c.foo() so that we can't skirt the problem. — Paul Tarjan
– Paul Tarjan, Commented Aug 4, 2009 at 3:02
namespace collisions are easier to solve with a from a.b import c as b_c and similar renamings. — Alex Martelli
– Alex Martelli, Commented Aug 4, 2009 at 3:02

Fred · Accepted Answer · 2009-08-04 02:46:04Z

9

Just rename it:

 from a.b import c as BAR BAR.foo()

answered Aug 4, 2009 at 2:46

Fred

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too much php · Accepted Answer · 2009-08-04 02:27:44Z

2

In your 'b' package, you need to add 'import c' so that it is always accessible as part of b.

answered Aug 4, 2009 at 2:27

too much php

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1 Comment

Paul Tarjan Over a year ago

Then b has to guess all the submodules that you would ever want to use on it? The code is in c, shouldn't there be a better way?

Alex Martelli · Accepted Answer · 2009-08-04 02:37:29Z

2

from a import b from a.b import c b.c = c

answered Aug 4, 2009 at 2:37

Alex Martelli

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2 Comments

Alex Martelli Over a year ago

Not sure what "monkeypatching the code" means -- it's monkeypatching module (package) b to remedy the fact that it doesn't, apparently, import its own c sub-module.

Alex Martelli Over a year ago

BTW, the intermediate name could also be changed with an as, of course, whether you then monkeypatch it back in as b.c or not.

Markus Jarderot · Accepted Answer · 2009-08-04 02:47:57Z

0

import a.b.c from a import b b.c.foo()

The order of the import statements doesn't matter.

edited Aug 4, 2009 at 2:47

answered Aug 4, 2009 at 2:42

Markus Jarderot

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